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AMK > Dermatology > Flashcards

Dermatology Flashcards

1
Q

What is pityriasis rosea?

A

A widespread rash following an oval patch of scaly skin

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2
Q

How long does pityriasis rosea last for?

A

6-12 weeks

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3
Q

Treatment pityriasis rosea

A

Emollient
Topical steroid - hydrocortisone

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4
Q

Symptoms of pityriasis rosea

A

Herald patch
Trunk affected
Erythematous, scaly patches
Itchy

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5
Q

What is pityriasis veriscolor?

A

Infection by malassezia fungi

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6
Q

Treatment pityriasis veriscolor

A

Fluonazole (against malassezia)

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7
Q

Symptoms pityriasis veriscolor

A

Dry, scaly rash
Well demarcated
Trunk affected
Young to middle-aged people

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8
Q

What is rosacea?

A

Malar rash on face

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9
Q

Symptoms rosacea

A

Red rash, papules, malar presentation

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10
Q

Management rosacea

A

Metronidazole

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11
Q

What is contact dermatitis?

A

A type of t4 hypersensitivity - can be caused by cement or fluorouracil (5-FU)

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12
Q

Sx dermatitis herpetiformis?

A

Itchy papules on buttocks/knees/elbows

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13
Q

Dermatitis herpetiformis associations

A

Coeliac disease - HLA-DR3 pre-disposition

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14
Q

Management dermatitis herpetiformis

A

Gluten-free diet
Dapsone

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15
Q

What is acne vulgaris?

A

A disorder of oil glands = increased sebum and testosterone

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16
Q

Symptoms acne vulgaris

A

greasy skin
Black/white heads
Papules
Cysts
On face/chest/neck/back

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17
Q

Treatment for acne

A

Decrease bacteria = ABx like erythro-/clinda- mycin
Benzoyl peroxide unblocks pores
Retinoids reduce inflammation
Decrease sebum using isotretinoin or oestrogen

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18
Q

pathophys eczema

A

Ineffective skin barrier allows allergens to react deeper skin cells
IgE mediated response

19
Q

Symptoms eczema

A

Itchy flexor surfaces
Atopic traits - asthma, hay fever, allergies

20
Q

What is eczema herpeticum?

A

+ HSV infection

21
Q

Risk factors eczema

A

Staph infection and allergies

22
Q

Management for eczema

A

Emollients
Steroids
Flucloxacillin

23
Q

Management for eczema

A

Emollients
Steroids
Flucloxacillin

24
Q

Management psoriasis

A

Vit D
EMollient
Topical steroid - betamethasone

25
Q

What is flexural psoriasis?

A

Affects smooth skin

26
Q

Pathophysiology psoriasis

A

Neutrophil infiltration of stratum corner

27
Q

Pustular psoriasis

A

Yellow/brown pustules
Affects palms and soles

28
Q

Guttate psoriasis

A

Affects younger people following strep/tonsil infection
‘Tear drop’ lesions on trunk

29
Q

Sx psoriasis

A

Red, scaly skin patches on extensor surfaces
Plaques can be shiny and white

30
Q

When do you excise skin cancer

A

When 2+ apply:
- Size >7mm
- Change in size
- Irregular border
- Irregular pigmentation
- Itch/irritation
- Inflammation
- Oozing/crusting

30
Q

When do you excise skin cancer

A

When 2+ apply:
- Size >7mm
- Change in size
- Irregular border
- Irregular pigmentation
- Itch/irritation
- Inflammation
- Oozing/crusting

31
Q

features of SCC

A

Ulcerating skin lesion that tends to bleed , typically older, male gardener

32
Q

risk factors SCC

A

actinic keratoses, sunlight, smoking - typically older male gardener

33
Q

Tx SCC

A

excision with 4-6mm margin

34
Q

melanoma

A

Pigmented, fast growing lesions

Multiple colours

Evolves from pre-existing mole

35
Q

impetigo exclusion time

A

Kids should be kept off school until all lesions are crusted/ have been on tx for 48h

36
Q

non-bulbous impetigo

A
  • Golden crust
  • Nose and mouth
  • Treat with antiseptic cream (hydrogen peroxide)
37
Q

bullous impetigo

A
  • Staph aureus
  • Fluid filled vesicles burst and form golden crust
  • Systemic Abx - flucloxacillin
38
Q

cellulitis sx

A

Bacterial skin infection of lower dermis - skin is red/painful/swollen

Caused by strep pyogenes

39
Q

cellulitis mx

A

penicillin

40
Q

erythema multiform

A

Hypersensitivity reaction - HSV and pneumonia

Red target lesions

Treat underlying cause

41
Q

Stevens-Johnson syndrome

A

Systemic reaction following medication administration

Stop meds and admit to hospital

42
Q

function of antihistamines

A

h1 inhibitor

AMK (33 decks)

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