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Dermatology

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Blistering Diseases

Question
24 out of 32
 

All the following are TRUE about erythema multiform EXCEPT (AIIMS Nov 2014)



A Vesicle and bullae are not seen

B Associated with internal malignancy

C Target lesion with bull's eye lesion seen over palms and soles

D Associated with adverse reaction to drugs

Ans. A
[Vesicle and bullae are not seen]

Erythema multiforme - manifests as very characteristic 1-2 cm circular lesions consisting of a pinkish raised periphery and a dark blush centre thickened to the iris of the eye or the target of the shooting range. Such a lesions are therefore called iris lesions or target lesions

1). Basically a type III immunologic reactions

2). Some case may develop tense blister at the centre of the target lesions and such cases are labeled as erythema multiforme-bullosum

3). Approximately 90% of cases of erythema multiforme minor follow outbreaks of herpes simplex

4). Erythema multiforme major (Stevens-Johnson syndrome) is most often caused by drugs, especially sulfonamides, NSAID's and anticonvulsants

5). Mycoplasma pneumoniae may trigger erythema multiforme major.

Blistering Diseases Flashcard List

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