Ringworm on the buttocks is considered to have the following conditions: a. Tinea corporis, which is caused by fungal infection, can be treated with oral itraconazole capsules as well as terbinafine hydrochloride tablets and topical application of terbinafine hydrochloride gel or luliconazole ointment. If the rash is bright red in color, you can apply topical wet application of compound Phellodendron japonicum dispel application and take oral Psoriasis Xanthagria capsule to strengthen detoxification, insecticide and anti-itch treatment. Second, psoriasis, can appear in the lumbosacral region of the territory of the hypertrophic plaques with clear boundaries, deepening of the skin furrow, skin ridge elevation, accompanied by intense itching. In treatment can be applied topically with strong glucocorticoid drugs, such as halometasone ointment or fluticasone propionate ointment, mixed with zinc oxide boric acid ointment.