Unit 4 Flashcards

1
Q

What is candidiasis?

A

Infections caused by Candida yeast, mainly Candida albicans.

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2
Q

What are common types of candidiasis?

A

Oral Thrush (white patches in mouth), Angular Cheilitis (cracks at mouth corners), Intertrigo (rash in skin folds), Vulvovaginal Candidiasis (vaginal yeast infection).

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3
Q

What causes oral thrush?

A

Damaged mucosal barrier or weakened immunity.

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4
Q

What are the symptoms of oral thrush?

A

White/yellow plaques on cheeks, gums, tongue.

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5
Q

How is oral thrush treated?

A

Miconazole Gel (2.5 ml, hold in mouth for 7 days + 1 extra week after symptoms resolve).

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6
Q

What is a key caution when using miconazole gel?

A

Avoid if taking warfarin (increased bleeding risk).

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7
Q

What advice should be given to oral thrush patients?

A

Rinse mouth after steroid inhalers; clean dentures regularly.

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8
Q

What is intertrigo?

A

Inflamed, itchy rash in skin folds (armpits, fingers, under breasts).

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9
Q

How is intertrigo treated?

A

Topical imidazoles (e.g., miconazole); avoid terbinafine (not OTC licensed for yeast infections).

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10
Q

What causes vulvovaginal candidiasis (vaginal thrush)?

A

Candida albicans, triggered by hormonal changes, diabetes, antibiotics, or immunosuppression.

“Thrush LOVES HDAI → Hormones, Diabetes, Antibiotics, Immunosuppression.

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11
Q

What are the symptoms of vaginal thrush?

A

Itching, soreness, white ‘cheese-like’ discharge.

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12
Q

How do you differentiate vaginal thrush from bacterial vaginosis?

A

Thrush: Itching + white ‘cheese-like’ discharge. BV: No itching, malodorous discharge.

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13
Q

What are the treatments for vaginal thrush?

A

Topical azoles (creams/pessaries) OR Oral fluconazole (150 mg, single dose for women 16-60).

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14
Q

How is thrush treated during pregnancy?

A

Topical azoles (NO oral fluconazole); refer to GP.

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15
Q

What are symptoms of thrush in men?

A

Irritation, burning, white discharge at penis head.

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16
Q

How is thrush treated in men?

A

Topical azoles; recommend condom use if partner is infected.

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17
Q

What are the common types of bacterial skin infections?

A

Cellulitis and impetigo. Non-OTC-treatable cases should be referred to a GP.

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18
Q

What is the difference between erysipelas and cellulitis?

A

Erysipelas affects the upper dermis and is usually caused by Streptococcus pyogenes, while cellulitis is a deeper tissue infection caused by various bacteria.

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19
Q

What are the characteristics of erysipelas?

A

Erysipelas affects the upper dermis, usually caused by Streptococcus pyogenes.

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20
Q

What are the characteristics of cellulitis?

A

Cellulitis is a deeper tissue infection caused by various bacteria, typically affecting the skin and subcutaneous tissue.

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21
Q

What are the risk factors for developing erysipelas or cellulitis?

A

Skin breaks, wounds, venous disease, immunodeficiency.

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22
Q

What are the symptoms of erysipelas or cellulitis?

A

Rapid onset with red, hot, swollen limbs, fever; often affects the lower limbs.

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23
Q

What complications can arise from untreated erysipelas or cellulitis?

A

Can lead to abscesses, gangrene, chronic swelling, and severe infections.

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24
Q

How are mild bacterial skin infections managed?

A

Rest, elevate limb, use analgesics like paracetamol or ibuprofen.

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25
Q

How are severe bacterial skin infections managed?

A

Oral antibiotics; IV antibiotics may be needed in severe cases.

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26
Q

What is the prognosis for bacterial skin infections if treated appropriately?

A

Generally excellent if uncomplicated.

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27
Q

What advice should be given to patients to prevent bacterial skin infections?

A

Treat skin conditions (e.g., athlete’s foot), clean wounds, elevate leg to reduce swelling, and use emollients to prevent dry skin.

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28
Q

What bacteria causes impetigo?

A

Caused by Staphylococcus aureus or Streptococcus pyogenes; highly contagious.

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29
Q

What are the risk factors for impetigo?

A

Poor hygiene, skin trauma, eczema.

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30
Q

What are the symptoms of impetigo?

A

Pink macules that evolve into vesicles with ‘honey-colored’ crust, often on the face.

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31
Q

How is localized impetigo managed?

A

Topical antibiotics for localized cases.

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32
Q

How is widespread impetigo managed?

A

Oral antibiotics for widespread cases.

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33
Q

What hygiene practices should be followed for impetigo?

A

Wash the affected area with soap to prevent the spread of the infection.

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34
Q

What are the common causes of viral skin infections (exanthema)?

A

Measles, Rubella, Fifth disease, Hand/foot/mouth disease, Chickenpox.

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35
Q

What are the common viruses that cause viral skin infections?

A

Varicella zoster (chickenpox), Herpes simplex, HPV.

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36
Q

How is chickenpox (Varicella Zoster) transmitted?

A

Airborne and contact transmission; highly infectious.

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37
Q

What are the symptoms of chickenpox (Varicella Zoster)?

A

Fever followed by a rash (papules, vesicles, crusts), mainly on the face and trunk.

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38
Q

How is chickenpox managed?

A

Symptomatic relief with antihistamines and paracetamol.

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39
Q

What precautions should be taken for chickenpox?

A

Avoid pregnant women, young children, and immunocompromised individuals.

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40
Q

What is the treatment for severe chickenpox cases?

A

Oral acyclovir for adults at high risk.

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41
Q

What does NICE guidance say about managing chickenpox?

A

Avoid NSAIDs due to the risk of necrotizing infections.

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42
Q

What causes herpes zoster (shingles)?

A

Reactivation of the chickenpox virus, usually in adults over 50.

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43
Q

What are the symptoms of herpes zoster (shingles)?

A

Painful rash along dermatomes; vesicles that crust over in 7-10 days.

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44
Q

How is herpes zoster (shingles) managed?

A

Oral antivirals for adults over 50 or with severe cases.

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45
Q

What is Post-Herpetic Neuralgia (PHN)?

A

PHN is pain that persists for months or years after the shingles rash has healed. Treatment includes amitriptyline, gabapentin, or capsaicin.

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46
Q

How is herpes simplex virus (HSV-1) transmitted?

A

Direct contact; commonly causes cold sores.

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47
Q

What are the symptoms of herpes simplex virus (HSV-1)?

A

Prodrome of burning or itching, followed by lesion appearance, typically resolving within 10-14 days.

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48
Q

How is herpes simplex virus (HSV-1) managed?

A

Analgesics for pain relief; topical antivirals are effective only during the prodrome phase.

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49
Q

What advice should be given to patients with herpes simplex virus (HSV-1)?

A

Avoid lesion contact, practice good hand hygiene, and limit triggers such as UV exposure and stress.

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50
Q

How is HPV (Human Papillomavirus) transmitted?

A

Contact with an infected person or contaminated surfaces.

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51
Q

What types of warts are caused by HPV?

A

Common warts (asymptomatic, can appear anywhere), plantar warts (painful with lateral pressure, typically on feet).

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52
Q

How is HPV (warts) treated with salicylic acid?

A

Apply salicylic acid daily for up to 12 weeks; debride the area and protect surrounding skin.

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53
Q

How is HPV (warts) treated with cryotherapy?

A

Cryotherapy with liquid nitrogen every two weeks; avoid in young children.

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54
Q

What types of damage can insect bites & stings cause?

A

Mechanical, Allergic, and Infective damage.

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55
Q

What are common insects responsible for bites?

A

Blood-sucking insects (mosquitos, ticks).

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56
Q

What are the three types of lice?

A

Head lice, body lice, pubic lice.

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57
Q

What is the prevalence of head lice?

A

Affects 4-22% of children, mostly ages 4-11.

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58
Q

How is head lice transmitted?

A

Head-to-head contact; lice survive 1-2 days off the host.

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59
Q

What are the symptoms of head lice?

A

Often asymptomatic; pruritus (itching) from bites/saliva.

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60
Q

How is head lice diagnosed?

A

Confirm live lice presence.

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61
Q

How is head lice treated?

A

Non-Chemical: Wet/dry combing with detection comb. Chemical: Malathion 0.5% (12h, repeat in 7 days), Dimethicone 4% (8h, repeat in 7 days).

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62
Q

What post-treatment advice should be given for head lice?

A

Check for lice on days 3 and 7. Prevent recurrence with regular combing; avoid prophylactic insecticides.

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63
Q

What are the two types of insect bites & stings?

A

Stinging insects: Bees (stinger stays), Wasps/Hornets (multiple stings). Biting insects: Mosquitos, fleas, ticks (saliva causes inflammation).

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64
Q

What are the symptoms of insect bites?

A

Itchy, erythematous papules.

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65
Q

What are the symptoms of insect stings?

A

Immediate pain, vasodilation, swelling, erythema.

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66
Q

What are systemic reactions to bites/stings?

A

Delayed or immediate hypersensitivity (e.g., wheals, anaphylaxis).

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67
Q

How should insect stings be managed immediately?

A

Remove bee stinger (scrape sideways), apply cold packs, use antihistamines.

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68
Q

How should severe insect sting reactions be managed?

A

Watch for anaphylaxis signs (breathing issues, facial swelling), use adrenaline auto-injector if needed.

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69
Q

How should localized insect bite/sting reactions be treated?

A

Oral analgesics (pain relief), topical antihistamines/steroids (itch relief), crotamiton/calamine for soothing.

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70
Q

What is a complication of untreated insect bites?

A

Secondary infection (often Staphylococcus aureus), may require antibiotics.

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71
Q

What advice should patients follow for insect stings?

A

Scrape bee stingers sideways, wear protective clothing, avoid bright colors, perfumes, be cautious when eating outdoors.

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72
Q

What are systemic effects of stings?

A

Anaphylaxis risk (bee, wasp, hornet stings).

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73
Q

What are symptoms of anaphylaxis?

A

Urticaria, angioedema, bronchospasm, possible unconsciousness.

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74
Q

How is anaphylaxis treated?

A

Adrenaline auto-injector, seek immediate medical care.

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75
Q

What is osteoarthritis (OA)?

A

OA is a joint disorder caused by cartilage loss, bone remodeling, and inflammation. It mainly affects the knees, hips, and hands, especially in older adults.

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76
Q

What are the major risk factors for OA?

A
  1. Genetic (no specific genes identified) 2. Occupational (kneeling, squatting jobs e.g., construction) 3. Obesity (worsens OA, especially in knees/hands) 4. Joint Injury (previous injuries increase risk).
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77
Q

What are the symptoms of knee OA?

A

Pain while walking, stiffness after sitting, swelling, and muscle weakness.

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78
Q

What are the symptoms of hip OA?

A

Pain while walking and at night; may require hip replacement.

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79
Q

What are the symptoms of hand OA?

A

Common in women (~50 years old), stiffness, and knuckle bony growths.

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80
Q

What are the symptoms of foot/ankle OA?

A

Big toe OA is common; managed with orthotics or surgery.

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81
Q

What are the symptoms of shoulder OA?

A

Rare, usually post-injury, managed with NSAIDs.

82
Q

What are the symptoms of spinal OA?

A

Disc degeneration → back pain; treated with pain relief, exercise, steroid injections.

83
Q

What happens in the disease process of OA?

A

Cartilage degeneration → Inflammation in ligaments & bones → Bone spurs form (not always painful).

84
Q

What are the clinical features of OA?

A

Symptoms: Stiffness, fatigue, weakness, joint pain, swelling, joint deformity. Signs: Discomfort, limited motion, reduced stamina, swelling, warmth, tenderness, abnormal posture/gait, crepitation.

85
Q

What are the key self-management strategies for OA?

A

Exercise (strengthening & aerobic), weight loss, proper footwear for lower limb OA.

86
Q

What is the first-line pharmacological treatment for OA?

A

Topical NSAIDs are first-line. Oral NSAIDs if needed (monitor toxicity, use gastroprotection).

87
Q

What are other pharmacological options for OA?

A

Paracetamol or weak opioids for short-term use.

88
Q

Why should caution be taken with glucosamine & strong opioids in OA?

A

Limited evidence & risk of side effects.

89
Q

What should be ruled out when assessing low back pain & sciatica?

A

Rule out cancer, infection, trauma, spondyloarthritis, and refer to NICE guidelines for serious conditions.

90
Q

What are the two risk categories for low back pain and sciatica?

A

Low-risk: Reassurance, activity advice, self-management. High-risk: Intensive support (exercise, therapy).

91
Q

When should imaging be used in low back pain & sciatica?

A

Imaging should be avoided unless the management plan will change based on the results.

92
Q

What are the key elements of self-management for low back pain?

A

Tailored advice and staying active.

93
Q

What types of exercise are recommended for low back pain & sciatica?

A

Group exercise such as bio-mechanical, aerobic, and mind-body exercises based on individual needs.

94
Q

What orthotic treatments should be avoided for low back pain?

A

Avoid belts, corsets, or rocker shoes.

95
Q

What is the role of manual therapy in low back pain management?

A

Avoid traction; it should be used as part of a broader treatment plan.

96
Q

Should acupuncture and electro-therapies be offered for low back pain?

A

No, acupuncture and electro-therapies should not be offered.

97
Q

What psychological therapy should be considered for low back pain?

A

Consider CBT-based (Cognitive Behavioral Therapy) therapy.

98
Q

What should be encouraged for patients with low back pain in terms of work?

A

Encourage return to normal activities and work.

99
Q

Which medications should be avoided in sciatica treatment?

A

Gabapentinoids, anti-epileptics, corticosteroids, benzodiazepines, opioids.

100
Q

How should NSAIDs be used in the management of sciatica?

A

Use NSAIDs cautiously at the lowest effective dose and consider gastroprotective treatment.

101
Q

How should NSAIDs be used in low back pain management?

A

Use NSAIDs cautiously, with monitoring for potential risks.

102
Q

What is the recommendation for opioid use in low back pain?

A

Weak opioids can be used for acute pain; avoid them for chronic pain management.

103
Q

Which medications should be avoided for low back pain?

A

Avoid paracetamol alone, opioids, antidepressants, and gabapentinoids.

104
Q

What is the recommendation regarding spinal injections for low back pain?

A

Spinal injections should be avoided for low back pain.

siatica we can give epidural inj or cortio

105
Q

What invasive treatment can be considered if non-surgical treatments fail for low back pain or sciatica?

A

Radiofrequency denervation can be considered if non-surgical treatments fail.

106
Q

When should epidural injections be considered for sciatica?

A

Epidural injections should be considered for acute severe sciatica but avoided for neurogenic claudication.

107
Q

What is the consideration for surgical intervention in sciatica?

A

Do not consider BMI, smoking, or psychological distress as barriers to surgery.

108
Q

What is the recommendation for spinal decompression surgery?

A

Consider spinal decompression surgery if non-surgical treatments fail.

109
Q

When should spinal fusion or disc replacement be considered?

A

Spinal fusion or disc replacement should be avoided unless part of a trial.

110
Q

What is non-specific low back pain?

A

Non-specific low back pain is mechanical, musculoskeletal pain without a serious underlying cause.

111
Q

What is sciatica?

A

Sciatica refers to leg pain caused by issues with the lumbosacral nerve roots.

112
Q

What medications are being reviewed for the treatment of sciatica?

A

Gabapentin and pregabalin are under review for treating sciatica.

113
Q

What is atopic eczema (AE)?

A

A chronic inflammatory skin condition caused by genetic predisposition, affecting the skin, gut, sinuses, and airways.

114
Q

What are the key symptoms of AE?

A

Dry skin, itching, redness, and inflammation.

115
Q

What are the key symptoms of AE?

A

Dry, cracked, scaly, and itchy skin. Most important feature is ITCHINESS – if there’s no itch, it’s unlikely to be eczema.

116
Q

What causes AE?

A

Altered skin barrier function & immune dysregulation → skin loses water, leading to dryness and irritation.

117
Q

Why does scratching worsen AE?

A

Scratching damages the skin → releases inflammatory cytokines → worsens itch → more scratching (itch-scratch cycle).

118
Q

How do emollients help treat AE?

A

Create a protective layer to prevent water loss, improve hydration, and block allergens/irritants.

119
Q

What do humectants in emollients do?

A

They are hygroscopic, meaning they attract & retain water in the skin.

120
Q

How often should emollients be applied?

A

Several times a day, immediately after bathing, and on the whole body (not just affected areas).

121
Q

How much emollient should be prescribed?

A

1–1.2 kg per month.

122
Q

When should topical steroids be applied in relation to emollients?

A

NICE: Apply emollient 30 minutes BEFORE the steroid.

123
Q

What advice should be given to patients using emollients?

A
  1. Avoid soaps & detergents 2. Use frequently, even when skin looks normal 3. Pat skin dry after bathing (don’t rub) 4. Apply by dotting & stroking downwards 5. Use a pump dispenser (avoid hand contamination in tubs).
124
Q

What determines the potency of a topical steroid?

A

The steroid molecule itself, its physicochemical properties, and formulation.

125
Q

Does a higher concentration always mean higher potency?

126
Q

How do topical steroids work?

A

Bind to glucocorticoid receptors in keratinocytes & fibroblasts → suppress pro-inflammatory agents, reduce Langerhans cells, block vasodilators (e.g., histamine & bradykinin).

127
Q

What are the four main effects of topical steroids?

A
  1. Anti-inflammatory 2. Immunosuppressive 3. Anti-proliferative 4. Vasoconstrictive
128
Q

Which topical steroid potency is used for mild eczema?

A

Mild potency steroid.

129
Q

Which potency is used for moderate eczema?

A

Moderate potency steroid.

130
Q

Which potency is used for severe eczema?

A

Potent steroid.

131
Q

Which potency is used for facial, genital, or axilla eczema?

A

Start with mild potency; increase if necessary.

132
Q

How does eczema become infected?

A

Persistent scratching damages the skin barrier, allowing bacteria (mainly Staphylococcus aureus) to infect the skin.

133
Q

What are common signs of infected eczema?

A

Red, angry, weepy skin with yellow crusts; pustules & papules; fever & malaise; itchy, hot, sore skin.

134
Q

What antibiotic is used for infected eczema?

A

Flucloxacillin for up to 2 weeks.

135
Q

What are calcineurin inhibitors?

A

Second-line treatments for eczema that suppress the immune system by blocking calcineurin, which activates T-cells.

136
Q

What are the two available calcineurin inhibitors?

A

Tacrolimus (Protopic) & Pimecrolimus (Elidel).

137
Q

How do calcineurin inhibitors work?

A

Bind to calcineurin proteins → prevent T-cell activation → reduce pro-inflammatory cytokines.

138
Q

What are oral treatments for eczema?

A

Ciclosporin, Azathioprine, Oral Corticosteroids, Mycophenolate Mofetil, Methotrexate.

139
Q

Why can’t oral immunosuppressants be used long term?

A

Risk of serious side effects (e.g., infections, organ toxicity, immune suppression).

140
Q

How does phototherapy work for eczema?

A

Alters cytokine production, kills infiltrating T-cells, inhibits antigen-presenting Langerhans cells, and thickens the epidermis to block allergens.

141
Q

When is UV light therapy used?

A

Second-line treatment when topical agents don’t work. Can be used alone or with oral treatments.

142
Q

Which biologic agent is licensed for moderate-to-severe AE?

A

Dupilumab (used for both eczema & psoriasis).

143
Q

What is irritant contact dermatitis (ICD)?

A

Skin damage from chemical/physical agents (e.g., solvents, detergents) faster than the skin can repair.

144
Q

Who is commonly affected by irritant contact dermatitis?

A

Occupational exposure (e.g., cleaners, hairdressers), young children (dribble rash), babies (nappy rash).

145
Q

Where does irritant contact dermatitis commonly appear?

146
Q

What are symptoms of irritant contact dermatitis?

A

Inflamed skin, blisters, scaling.

147
Q

How is irritant contact dermatitis managed?

A

Avoidance of irritant (e.g., gloves), emollients, topical steroids. May take up to 12 weeks to heal.

148
Q

What is allergic contact dermatitis (ACD)?

A

Delayed allergic reaction (48-72 hours) to specific allergens like nickel, watch straps, perfumes.

149
Q

What is the management of allergic contact dermatitis?

A

Avoid allergen, use emollients & topical steroids. If cause is unknown, refer for a patch test.

150
Q

Why is dermatology more complex in darker skin tones?

A

Inflammatory changes are less obvious and may appear dark purple or hyperpigmented.

151
Q

How does the skin barrier differ by ethnicity?

A

Black skin has more corneocyte layers but less lipid content (prone to dryness).

152
Q

What are useful dermatology resources for skin of color?

A

Brown Skin Matters & Skin of Colour Society.

153
Q

What is urticaria?

A

Allergy rash (‘hives’)—itchy, blotchy, raised rash due to mast cell activation & histamine release.

154
Q

What chemicals cause swelling in urticaria?

A

Histamine, bradykinin, leukotrienes, prostaglandins.

155
Q

What are causes of acute urticaria?

A

Food allergies, insect bites, stings, NSAIDs, viral infections, physical stimuli (pressure, cold, heat, sun exposure).

156
Q

How is urticaria managed?

A

Avoid triggers, use non-sedating antihistamines, and topical therapies like calamine.

157
Q

What is acne vulgaris?

A

A disease of the pilosebaceous follicle, mainly affecting the T-zone, chest, and back.

158
Q

What are the 4 stages of acne development?

A
  1. Release of inflammatory agents 2. Increased androgen-driven sebum production 3. Abnormal keratinocyte proliferation & blockage 4. Proliferation of Cutibacterium acnes.
159
Q

What is a microcomedone?

A

A blocked follicle, the earliest acne lesion.

160
Q

How do comedones form?

A

Blackheads (open comedones) form when blockage is near the surface (melanin oxidation). Whiteheads (closed comedones) form deeper due to pressure buildup.

161
Q

What are different acne lesions & their features?

A

Papules = Small, red, tender. Pustules = Papules with pus. Nodules = Deep, solid, painful. Cysts = Nodules filled with pus.

162
Q

Which acne lesions cause scarring?

A

Nodules & cysts.

163
Q

When should acne be referred to a GP?

A

If acne affects the chest or back (topicals harder to apply).

164
Q

What is the first-line OTC treatment for acne?

A

Benzoyl peroxide.

165
Q

How does benzoyl peroxide work?

A

Bactericidal against C. acnes, reduces inflammation, targets comedones.

166
Q

How does nicotinamide help acne?

A

Vitamin B3 derivative, reduces inflammation & sebum production.

167
Q

What is the function of salicylic acid?

A

Keratolytic action—breaks down comedones.

168
Q

How long should acne treatment be continued before switching?

A

At least 6 weeks.

169
Q

What are dietary triggers for acne?

A

Greasy food, dairy, chocolate.

170
Q

How does stress worsen acne?

A

Sebaceous glands are influenced by corticotropin-releasing hormone (CRH), increasing oil production.

171
Q

Should acne patients pick or squeeze spots?

A

No, increases scarring risk.

172
Q

How to reduce irritation from topical treatments?

A

Short contact therapy—start with 15 min application, wash off, then gradually increase. Use every other day if irritation occurs.

173
Q

What is the benzoyl peroxide warning for patients?

A

Can bleach clothes & pillows.

174
Q

What are the best formulations for different skin types?

A

Gels = Oily skin. Creams/Lotions = Dry/sensitive skin.

175
Q

What does ‘comedogenic’ mean?

A

Causes acne (e.g., some moisturizers).

176
Q

Should moisturizers be used in acne?

A

Yes, to prevent dryness from treatments—apply after topicals.

177
Q

What are the 3 main oranism causes of superficial fungal infections?

A
  1. Dermatophytes (keratinised areas: skin, hair, nails) 2. Candidiasis (yeast: mouth, vagina, GI) 3. Malassezia (lipid-dependent, in oily skin areas).
178
Q

How do dermatophytes grow?

A

They need keratin & release keratinase, staying confined to the epidermis.

179
Q

What are key risk factors for dermatophyte infections?

A

Moist/damaged skin, warm/humid environments.

180
Q

How are dermatophyte infections transmitted?

A

Direct or indirect contact.

181
Q

What are the clinical forms of tinea?

A
  1. Tinea Corporis (ringworm): Red, scaly patch with central clearing 2. Jock itch (Tinea Cruris): Red, scaly rash in the groin 3. Athlete’s Foot (Tinea Pedis): Moist, peeling skin between toes.
182
Q

What is a major risk of athlete’s foot?

A

Bacterial infection (e.g., cellulitis) due to cracked skin.

183
Q

What are pharmacy treatments for fungal skin infections?

A
  1. Imidazoles (e.g., clotrimazole) – Fungistatic, disrupts fungal membranes. 2. Allylamines (e.g., terbinafine) – Fungicidal, shorter treatment.
184
Q

What are combination products for fungal infections with inflammation?

A

Daktacort®, Canesten HC® (max 7 days OTC use).

185
Q

How long should topical antifungals be used?

A
  • Imidazoles: 2-6 weeks, continue 1 week after symptom resolution. - Terbinafine: 1–2 weeks (body/groin), 7 days (feet).
186
Q

How should antifungals be applied?

A

Apply to affected area + 4-6 cm radius, on dry skin.

187
Q

What are preventive measures for fungal infections?

A
  1. Use antifungal talc in shoes, rotate footwear. 2. Wear cotton socks/clothes to reduce moisture.
188
Q

What is the best OTC treatment for fungal nail infections?

A

Amorolfine 5% (Curanail®) – applied once weekly.

189
Q

How long does it take to treat fungal nails?

A

Fingernails: 6 months. Toenails: 9–12 months (up to 2 nails).

190
Q

mild topical corticosteroids

A

Hydrocortisone acetate (Mild)
Fluocinolone acetonide 0.0025%
Indication: Mild eczema.

Side effects: Skin atrophy, depigmentation, vasodilation, adrenal suppression.

191
Q

Calcineurin Inhibitors (Immunosuppressants for Eczema)

A

Tacrolimus (Protopic®) – Inhibits T-cell proliferation. Indication: Moderate-severe atopic eczema (short-term). Side effects: Infection risk, abnormal sensation, skin reactions.

Pimecrolimus (Elidel®) – Inhibits T-cell proliferation. Indication: Mild-moderate atopic eczema (short-term). Side effects: Infection risk, rare skin discoloration.

Cyclosporin – Inhibits lymphokine release. Indication: Severe atopic dermatitis (short-term). Side effects: Hypertension, tremor, nausea, vomiting, hair changes

192
Q

Systemic Immunosuppressants for Severe Eczema & Psoriasis

bank roberry

A

Azathioprine – Metabolized to mercaptopurine. Indication: Severe refractory eczema. Side effects: Infection risk, anemia, hypersensitivity.

Methotrexate – Inhibits dihydrofolate reductase. Indication: Severe psoriasis. Side effects: Infections, diarrhea, GI & hepatic issues.

Mycophenolate – Inhibits inosine monophosphate dehydrogenase. Indication: Severe refractory eczema (Unlicensed use). Side effects: Infection risk, acidosis, alopecia, tachycardia.

Dupilumab – Inhibits IL-4 & IL-13 signaling. Indication: Moderate-severe atopic eczema. Side effects: Arthralgia, dry eye, eosinophilia, eye inflammation, oral herpes.

193
Q

Antibiotic for Skin Infections

A

Flucloxacillin – Interferes with bacterial cell wall synthesis. Indication: Secondary bacterial infection of eczema. Side effects: Diarrhea, nausea, hypersensitivity.

194
Q

Antihistamines (For Allergies, Urticaria, Atopic Dermatitis)

A

Loratadine – Non-sedating H1 antagonist. Indication: Hay fever, urticaria. Side effects: Drowsiness, nervousness (children).

Cetirizine – Non-sedating H1 antagonist. Indication: Hay fever, urticaria, atopic dermatitis. Side effects: Headache, dry mouth, nausea (rarely agitation).

195
Q

Acne & Skin Conditions drugs

A

Benzoyl peroxide (BPO) – Breaks down comedones, bactericidal. Indication: Acne vulgaris. Side effects: Dryness, redness, peeling, burning.

Salicylic Acid – Softens keratin. Indication: Warts. Side effects: Skin irritation.

196
Q

antifungals drugs

A

Antifungals
Miconazole – Inhibits fungal membrane synthesis. Indication: Fungal skin infections, oral candidiasis. Side effects: Dry mouth, nausea, vomiting.

Fluconazole – Inhibits fungal cell growth. Indication: Vaginal/mucosal candidiasis, tinea. Side effects: GI discomfort, nausea, headache, skin reactions.

Terbinafine – Inhibits squalene epoxidase → fungal cell death. Indication: Dermatophyte infections (nails, tinea). Side effects: GI discomfort, headache, myalgia.

197
Q

moderate steroids

A

Clobetasone (Moderate)
betamethasone RD
Indication: Eczemas & dermatitis of all types.

Side effects: Skin atrophy, depigmentation, vasodilation, adrenal suppression.

198
Q

potent steroids

A

Hydrocortisone butyrate (Potent)

Indication: Severe inflammatory skin disorders (e.g., severe eczema, psoriasis).

Side effects: Skin atrophy, depigmentation, vasodilation, adrenal suppression.

Betamethasone (Potent)

Indication: Severe inflammatory skin conditions.

Side effects: Skin atrophy, depigmentation, vasodilation, adrenal suppression.

199
Q

v potent steroids

A

Clobetasol (Very potent)

Indication: Recalcitrant eczema, psoriasis (short-term use).

Side effects: Skin atrophy, depigmentation, vasodilation, adrenal suppression.

Diflucortolone (Very potent, discontinued)

200
Q

calamine mechanism

A

Calamine – Anti-pruritic. Indication: Minor skin conditions. Side effects: Occasional irritation.