Erythema multiforme is most commonly caused by?
Ans. is 'b' i.e., Idiopathic Idiopathic erythema multiforme is the most common cause of EM. Herpes simplex is the most impoant infectious cause of EM. Causes of Erythema multiforme Idiopathic --) Most common cause Viral --> HSV (most impoant) HBV, Mumps, Adenovirus Bacteria - Streptococci, tuberculosis Fungal --> Coccidioidomycosis, Histoplasmosis. Drugs ---> Antibiotics (Sulphonamide), Phenytoin, NSAIDS. Autoimmune disease --> SLE, thyroiditis, RA Others --> Sarcoidosis, Pregnancy, Malignancy.
Herpes simplex
Idiopathic
TB
Drugs