False about erythema nodosum:
Erythema nodosum is characterized by tender, painful. erythematous. nodular eruption commonly over shin bone. Trunk is not affected commonly. On histopathology septal panniculitis is detected. Nodules never ulcerate, regress within 3-6 weeks to leave behind post inflammatory hypes pigmentation.
Trunk is the most common site for these lesions
The initial lesion is red and later turns blue
It can occur in Sarcoidosis
The lesions are painful