DERMATOLOGY Flashcards
Guttate Psoriasis presents with 1)___, following 2)__ and is common in 3)__. Self - limiting (2-3 mo). Rx same as psoriasis.
Pityriasis Rosea presents with 4)___, followed by 5)__. It is self limiting (6 weeks).
Pityriasis Versicolor presents with 6)___, following 7)__, due to 8)__. Predisposing factors include 9)__. Rx is 10)__
1 - tear drop papules on back + limbs
2 - Strep inf 2-4 weeks
3 - Children and adolescents
4 - Herald patch
5 - scaly, oval, erythematous plaques along a Christmas/fir tree distribution
6 - scaly, pruritic, Hypopigmented/Pink/Brown patches on trunk
7 - suntan
8 - Malassezia furfur (fungus)
9 - Immunosuppression
Malnutrition
Cushing’s
10 - Topical ketoconazole —> If fails send skin scrapings + Oral Itraconazole
Psoriasis is exacerbated by 1)—
Treatment of psoriasis is as follows = 2)—
1= Alcohol
Trauma
Steroid withdrawal
Drugs —> ACE-I, antimalarial (chloroquine, hydroxychloroquine),
Beta-blocker, Lithium, NSAID, INFLIXIMAB
2 = 1 line —> Emollient + Topical steroid (OD) + Top Vit D (Calcipotriol/
Calcitriol/Tacalcitol) (OD) 4 weeks
2 line —> Increase Vit D to BD
3 line —> Increase steroid to BD/Coal Tar/Dithranol
Hereditary Haemorrhagic Telangiectasia or 1)__ is an 2)__ characterised by —> 3)__
1 - Osler-Weber-Rendu Syndrome
2 - AD disorder
3 - First degree relative of HHT
Epistaxis
Telangiectasia — lips/mouth/nose/fingers, Pulm/GI/Hepatic/
Cerebral/Spinal AVM
S/E of Isotretinoin include:-
Hair thinning Dry eyes/lips/mouth/skin Epistaxis ICH (with tetracycline) Photo sensitivity Terratogenic Raised TG
Causes of Acanthosis Nigricans
P - PCOS, Prader Willi
C - Cushing/Cancer GI/DM/Hypothyroid/Acromegaly
O - Obesity/OCP
S - . . .
Familial
Nicotinic Acid
DD of Shin Lesions
Erythema Nodosum - 1
Pyoderma Gangrenosum - 2
Pretibial Myxoedema - 3
Necrobiosis Lipoidica Diabeticorum - 4
1 - Painful, Erythematous nodules in background of
(Sarcoidosis/IBD/Behcet’s/malignancy-Lymphoma/Pregnancy/
Inf - Strep, TB, Brucellosis/Drugs - Penicillin,OCP,Sulphonamide)
2 - Red papules —> Necrotic ulcers with violet borders in background of
(IBD/Connective tissue disorder/Myeloproliferative disorder)
3 - Erythematous lesions with shiny, orange peel skin in background of
Grave’s
4 - Shiny, yellow/red skin associated with telangiectasia in background of
DM
Lichen sclerosus is an 1)__ presents with 2)__ and occurs in 3)__
Lichen planus is characterised by 4)__ in 5)__
Lichenoid drug eruptions are caused by 6)__
1 - Inflammatory Condition
2 - Itchy, red patch in genitalia which transforms into white plaque
3 - Elderly females
4 - Pruritic Purple Polygonal Planar Papules and Plaques
Wickham’s striae —> White lines on surface
White lace pattern on buccal mucosa
Koebner’s phenomenon —> new lesions at site of trauma
5 - Palms/Soles/Flexor surfaces of arms/Genitalia
6 - Gold/Quinine/Thiazides
Erythema Abigne - 1
Erythema Chronicum Migrans - 2
Erythema Multiforme - 3
Erythema Nodosum - 4
1 - Erythematous, reticular, hyperpigmented, telangiectasic
patches after exposure to infrared radiation (fireplace/hot
bottle) —> develops into SCC
2 -
3 - Erythematous, target lesions in UL>LL, spreading to torso in
background of
C —> Cancer
A —> Autoimmune disease (Sarcoidosis/SLE)
D —> Drug (Allopurinol/OCP/Carbamazepine/Penicillin/NSAID/Nevirapine/Sulphonamide)
I —> HSV/Mycoplasma/Streptococcus
4 - Erythematous nodules in background of
(Sarcoidosis/IBD/Inf - Strep, TB, Leprosy, Coccidiomyces,
Histoplasmosis/Drugs - Penicillin,OCP,Sulphonamide)
Pyogenic granuloma, also called 1)__ is characterised by 2)__
1 - Eruptive Haemangioma
2 - small red/brown spot —> rapidly progressive, spherical lesion
(subject to bleed/ulceration) in head/neck/trunk/hands of young
adults and mouth in pregnancy
3 -
Acne Rosacea is characterised by 1)__, exacerbated by 2)__
Rx of choice is 3)__
1 - facial flushing, telangiectasia, persistent erythema with papules
and pustules, rhinophyna, blepharitis
2 - sunlight and alcohol
3 - Mild —> Topical Metronidazole
Moderate - Severe —> Oral Oxytetracycline
Predominant flushing —> Topical Brimonidine
Predominant Telangiectasia —> Laser
Supportive —> High SPF Sunscreen/Camouflage creams (redness
concealed)
KELOID SCAR Predisposing factors
- Black, young male
- Sternum > shoulder > neck > face > extensor surface of limbs >
trunk - Incisions NOT along relaxed skin lines
Seborrhoea Dermatitis presents with 1)—
It may be associated with 2)—
1 = Itchy, scaly rash (eczematous lesions) in sebum rich areas/
face (periorbital/auricular/nasolabial folds) and scalp
distribution
2 = Otitis externa/Blepharitis/HIV/Parkinsonism
PELLAGRA is characterised by 1)—
It is caused by 2)— due to 3)—
1 = Dermatitis (Brown scaly rash over sun exposed areas/Casal’s necklace if around neck) Diarrhoea Dementia Death
Malignant Melanoma has the following subtypes = 1)—
2)— variant is the most progressive.
1 = Superficial Spreading > Nodular > Lentigo Maligna > Acral
lentiginous
2 = Nodular
Slope is is of two types = Scarring and Non scarring
Scarring variant is due to 1)— and is caused by 2)—
Non scarring variant is due to 3)— and is caused by 4)—
1 = Destruction of hair follicles
2 = Trauma/Burn Tinea capitis Radiotherapy Lichen planus Discoid lupus
3 = Preservation of hair follicles
4 = Male pattern baldness Iron/Zn def Telegenic effluvium Trichotillomania Alopecia areata Drugs — OCP/Cytotoxics/Colchicine/Carbimazole/Heparin
Causes of YELLOW NAIL SYNDROME = 1)-
Causes of ONYCHOLYSIS = 2)-
1 = Bronchiectasis
Chronic sinusitis
Congenital Lymphoedema
Pleural effusion
2 = Raynaud/Dermatitis/Psoriasis
Excessive manicuring
Fungal
Hypo/Hyperthyroidism
Actinic Keratosis is a 1)— condition caused by 2)— and presenting as 3)—
1 = Premalignant skin condition
Bulbous Pemphigoid
Mainstay of Rx is 1)—
1 = Oral steroid
Causes of Pruritus
- CLD/CKD/Lymphoma/IDA/Polycythemia
- Skin —> Scabies/Eczema/Psoriasis/Pityriasis Rosea/Urticaria
- Senile Pruritus
- DM/Pregnancy/Thyroid
TB ASSOCIATED SKIN DISORDERS
Lupus Vulgaris (COMMONEST) Verrucosa cutis Erythema nodosum Scrofuloderma Scarring alopecia Gumma
PREGNANCY ASSOCIATED SKIN DISORDERS
Pemphigoid gestationis —> Pruritic Blistering lesions starting in peri-umbilical region & spreading to trunk/back/buttock/arm —> 2nd/3rd trimester —> [Oral Steroids]
Polymorphic eruption of pregnancy —> Abd striae to Pruritic lesion —> 3rd trimester —> [Emollients -> Topical steroid -> Oral steroids]
Molluscum Contagiosum presents with 1)—
It commonly occurs in 2)— in the following sites 3)—
1 = clusters of pinkish/pearly white papules with central
umbilication (diameter < 5 mm)
DRUGS CAUSING SJS
Penicillin/Sulphonamide Allopurinol NSAID OCP Phenytoin/Carbamazepine/Lamotrigine
Systemic Mastocytosis and Carcinoid syndrome both present with 1)—
1 = Flushing/Abdo pain/Diarrhoea
HYPERTRICHOSIS is 1)— hair growth and is caused by 2)—
HIRSUITISM is 3)— hair growth and is caused by 4)—
1 = Androgen Independent
2 = PCT
Anorexia nervosa
Minoxidil/Ciclosprin/Diazoxide
Congenital Hypertrichosis Lanuginosa/terminalis
Eczema Herpeticum presents as 1)— with a history of 2)—
Rx of choice is 3)—
1 = area of worsening painful eczema + punched out erosions
2 = Atopic dermatitis/high IgE
3 = IV Aciclovir
Zn def associated skin disorder is 1)— and is precipitated by 2)—
Other features are 3)—
1 = Acrodermatitis herpetiformis leading to Perioral dermatitis
(red crusted lesions) and Alopecia
2 = Malabsorption/TPN
3 = Hypogonadism/Hepatosplenomegaly/Geophagia/Short Stature/
Cognitive impairment
ACNE VULGARIS TREATMENT ALGORITHM
Single Topical therapy (Benzoyl peroxide/Retinoids)
Combo Topical therapy (Benzoyl peroxide/Antibiotics/Retinoids)
Oral Antibiotics (Tetracycline — lyme/oxytetra/doxy) for max 3 mo Erythromycin —> Pregnancy High dose TMP —> Gram (-) folliculitis
COCP as alternative to ABx
Oral Isotretinoin
Venous ulcers are typically seen 1)—
2)— is done in non healing ulcer to 3)—
1 = Above medial malleolus
2 = ABPI
3 = to assess circulation
Scabies is caused by 1)— and is characterised by 2)—
Rx of choice is 3)—
1 - Mite (Sarcoptes scabiei)
2 - widespread Pruritus/linear burrows on interdigital webs,sides of
fingers, flexor aspects of wrists
3 = Permethrin 5% > malathion 0.5% (creams)
Dry & leave on skin for 8-12h (permethrin)/24h for malathion, before
washing off + repeat after 7 days
PCT is the most common 1)—
It occurs due to deficiency in 2)— because of 3)—
1 - Hepatic Porphyria
BLISTERING SKIN DISORDERS
Dermatitis Herpetiformis = 1
1 = Itchy vesicular lesions on extensors
Bx —> Granular deposition of IgA in upper dermis
Association —> COELIAC DISEASE
Rx —> Gluten free diet/Dapsone