There are several cases of dead skin on the elbow as follows: I. Friction tinea caused by physical irritation, to avoid repeated local frictional irritation, oral levocetirizine hydrochloride granules or olopatadine hydrochloride tablets are needed, and local application of drugs with moisturizing, nourishing and anti-inflammatory effects, such as butyl hydroxy acid ointment mixed with zinc oxide borate ointment is applied. Second, common type psoriasis, which can appear silvery white scales, can be topically applied with carbotriol ointment or tacalcitol ointment-like vitamin D3 derivatives, mixed with halometasone ointment or fluticasone propionate ointment, and orally compounded amineptine tablets, combined with compounded glycopyrrolate capsules.