Erythema nodosum is due to – a) Contraceptive pillsb) Barbituratesc) Penicillind) Sulphonamides
Causes of Erythema nodosum
Idiopathic
Bacterial: - Streptococci, TB, Leprosy (ENL), LGV, yersinia, mycoplasma, Rickettsia, Cat scratch disease.
Fungal: - Coccidioidomycosis, Histoplasmosis, Trichophyton.
Viral : - HBV, HIV
Drugs : - Sulfonamides, iodides, oral contraceptives.
Systemic diseases : - IBD (Ulcerative colitis, Crohn's disease), Sarcoidosis, Bechet's disease, SLF
Malignancy : - Hodgkin's disease, other malignancies
Other : - Pregnancy
b
ad
ac
ab