If the feet are covered with bun need to choose the treatment according to the specific disease, including the following: 1, erythema nodosum: this disease belongs to the vasculitis disease, in clinical treatment can be oral trenbolone tablets, methylprednisolone tablets, can also apply aminophenone, thalidomide for oral, with topical hydrocortisone butyrate ointment mixed with zinc oxide boric acid ointment treatment, if the rash color is red, need local irradiation helium-neon laser after Wet application of skin health lotion, compound cypress liquid coating treatment. 2, eczema: is due to allergic factors, in clinical treatment can be oral levocetirizine hydrochloride oral solution, orotate hydrochloride tablets, local application of hydrocortisone butyrate ointment mixed with butyl hydroxylate ointment treatment.