The scrotum has a pimple the size of a soybean, which is very, very itchy. The more you scratch it, the more itchy it is. It happens once a year in spring and summer. What's the disease?

Oral penicillin V tablets, erythromycin, tetracycline and 1/5000 potassium permanganate solution can be soaked, washed and daubed with erythromycin ointment. Potassium permanganate solution is usually recommended for cleaning.

Suggestion:

At the same time, sexual life and masturbation are forbidden, and the diet should be spicy and light. It is best to go to the nearest 3A hospital for examination and treatment.