4th Year: Photo-Dermatology Flashcards
1
Q
fitzpatrick skin types
A
1 only burn 2 burns, can tan 3 tans, can burn 4 tans 5 dark brown skin 6 black skin
2
Q
onset of UVB sunburn?
A
2-4 hours with peak at 12-24
3
Q
onset of UVA sunburn
A
24 hours with peak at 96 hours
4
Q
example of an immunological photodermatoses
A
polymorphic light eruption
5
Q
what is polymorphic light eruption?
A
type 4 hypersensitivity reaction to the sun
6
Q
presentation of polymorphic light eruption
A
female first 3 decades
first sun exposure of the year
delayed onset papules and vesicles
7
Q
management of PLE
A
desensitisation possible
8
Q
categories of chemical photosensitivity
A
- exogenous (drugs)
2. endogenous (prophyrias)
9
Q
photosensitive drugs
A
tetracyclines sulphonamides thiazides NSAIDs quinine amiodarone
