The causes of penile itching may be allergic skin diseases, scabies, as follows: 1, allergic skin diseases: after the application of condoms, due to the lubricating oil in the condom and cause the penile skin to appear allergic reaction, manifested as erythema, pimples, accompanied by itching. In the treatment, the use of condoms is contraindicated, if the itching is mild, you can use tacrolimus ointment externally, if the itching is severe, accompanied by a large number of red pimples, you can take oral compound glycyrrhizin tablets and levocetirizine hydrochloride tablets, in the topical medicine, you can mix the topical use of mometasone furoate cream and urea Vitamin E cream. 2, Scabies: Scabies mites are infected by a contagious skin disease caused by the mites, there will be red pimples on the penis, accompanied by itching, and there are also red pimples, and there are also itchy pimples. Papules, accompanied by itching, and in severe cases there will be peeling phenomenon. Therefore, in the treatment, you can mix the topical fluticasone propionate cream and sulfur ointment, if the itching is serious, especially in the night aggravation, you can also take oral dryness and anti-itching capsule and olopatadine hydrochloride tablets. At the same time, pay attention to personal hygiene, wear cotton underwear, during the treatment period, you need to avoid spicy, stimulating food, abstain from alcohol. Therefore, for patients with penile itching, it is recommended to go to the regular hospital, under the guidance of dermatologists for appropriate drug treatment.