Erythema multiforme Flashcards
1
Q
what happens in this?
A
- hypersensitivity reaction
- commonly triggered by infections
2
Q
Features
A
- target lesions
- initially seen on back of hand and feet then spreads to torso
-upper limb are mostly affected - may present with puritis
3
Q
Causes
A
- HSV (most common)
- idiopathic
- bacterial (mycoplasma and streptococcus)
- drugs- penicillin, allopurinol, NSAIDs, sulphonamides, OCP, carbamazepine
- SLE
- sarcoidosis
- malignancy
4
Q
Erythema multiforme major
A
- mucosal involvement
