Erythema nodosum is seen in all except -
SLE
TB
Pregnancy
Sulfonamide use
Causes of erythema nodosum are Bacterial: streptococcus, TB, yersinia Fungi: coccidiodomycosis Viruses: IMN, HBV Others: amoebiasis, giardiasis, chlamydia Drugs: sulfonamides, bromides , OCP Miscellaneous: sarcoidosis, Behcets disease, UC, connective tissue disorders, malignancy, pregnancy From illustrated synopsis of dermatology and sexually transmitted diseases neena khanna 5th edition page no 201
Autoimmune skin disorders