Correct Answer: 4. Septal panniculitis
Explanation: This lesion is most characteristic of erythema nodosum. On pathology, erythema nodosum shows septal panniculitis. Erythema nodosum has been associated with underyling systmeic disease (Bechet’s syndrome, IBD, sarcoidosis), infections (streptococcus, deep fungal, mycobacterial, protozoa), and drugs (sulfa, penicillin, OCP).
Don’t Agree? Tell us why in the comments section below.