Dermatology Flashcards
Herald lesion - associated condition
Pitiriasis rosea
Lichen Planus
- describe
- distribution
itchy, papular rash most common on the palms, soles, genitalia and flexor surfaces of arms
Polygonal shapes
White lines
Lichen planus - management ladder
Potent topical steroids
Oral steroids
Immunosuppressants
benzydamine mouthwash or spray for oral Lichen planus
Lichen simplex chronicus- cause, Mx
- chronic scratching/rubbing eg due to eczema
- Potent topical steroids
Livedo reticularis
- Describe
- Associated conditions
Net-like reversible discolouration of venules triggered by cold
RhA, SLE, polyarteritis nodosa, TB, raynauds, polymyositis
Acanthosis nigrans
- Associated condition
Obesity, DM, gastric carcinoma, Hodgkin’s lymphoma, acromegaly, cushings syndrome
Dermatitis herpetiformis
- A/w
Coeliac disease
Folliculitis Barbae
- describe
- cause
- management
Staph aureus infection of beard area
Treated w topical or po ABx
Roseola
AKA
Describe
Cause
Exanthem subitum, sixth disease, three-day rash
Rose-coloured macular rash that appears after several days of high fever
Human herpes virus
Fungal nail infection
- topical and systemic treatment
- 5% amorolfine nail lacquer 1-2x weekly -6/12 fingers 12/12 toes
- terbinafine 250mg OD 12/52 fingers, 6/12 toes
Headlice management
Dimeticone, wet comb
Co-cyprindol
- indications
- caution
Cyprocitone acetate + ethanylestradiol
Severe acne refractory to ABx
Moderate hirsutism
Caution - meningiomas - should be monitored (the CA)
Dermatomyositis features
- Plaques on the knuckles + eyelids (Gottron’s papules + heliotrope rash)
- Weakness due to proximal muscle inflammation
Scalp scales, nail bed changes
Livedo racemosa - describe, cause
Non-reversible broken and asymmetrical net like discoloured blood vessels
Due to obstructing thrombus
