Dermatology Flashcards
What are the risk factors for Scabies?
poor personal hygiene
immunocompromisation
low socioeconomic status
working in industrial setting
what is the first line treatment for scabies?
Permethrin 5% from the neck down for 8-14 hours and then wash off
What is Behcets disease?
a syndrome described by recurrent painful oral ulceration (3 times in 1 year) plus 2 or more of the following
recurrent painful genital ulcers which heal with scarring
ophthalmic lesions
skin lesions such as erythema nodosum
What is tinea versicolour?
a pale, velvety hypo pigmented macule which does not tan is non-scaly
What causes tinea vericolour?
Malassezia furfur - fungus
What is vitiligo?
An autoimmune disease characterised by areas of depigmentation lacking melanocytes.
what causes vitiligo?
caused due to an autoantibody against melanocytes, associated with other autoimmune conditions
What is a Marjolin’s ulcer?
squamous cell carcinoma which develops in a scar
What is dermatofibroma?
an overgrowth of fibrous tissue situated in the dermis
it can be precipitated by minor trauma to the skin such as an insect bite and it is completely benign
what is Lichen Planus?
inflammatory skin condition affecting cutaneous and mucosal surfaces.
what is Lichen Planus characterised by?
flat-topped plaques and papule that are shiny, have a purple hue and overlying white striae called Wickham striae
How is Lichen Planus treated?
topical steroids and immunomodulators and usually resolves in 2 years
