Erythema Multiforme Flashcards
1
Q
Definition of erythema multiforme?
A
Inflammation of skin and mucous membranes (type IV hypersensitivity)
2
Q
2 types of erythema multiforme + features?
A
EM minor - just skin
EM major - skin + mucosa
3
Q
Causes of erythema multiforme?
A
Infections - herpes (HSV) - mycoplasma - HIV Drugs - sulphonamides (ABx)
4
Q
Extra-dermal symptoms of erythema multiforme?
A
Prodrome (warning symptoms that come on before actual disease)
- includes fever and aches
5
Q
Lesion characteristics of erythema multiforme?
A
Target lesions
- central vesicle/crust
- ring of pallor
- ring of erythema
Tender/itchy/painful
Distribution (often starts on hands then spreads)
6
Q
Lesion distribution characteristic of erythema multiforme?
A
Often starts in hands and then spreads
