Itchy skin at the testicles is a symptom of scrotal eczema, allergies, and glans penis. If the skin at the testicles is itchy, peeling and has visible small papules, it is considered to be a symptom of scrotal eczema. The onset of scrotal eczema is mainly related to the local environment of the perineum being hot and humid or the lack of B vitamins in the body. If the local skin itching is simple and there are no other uncomfortable symptoms, it may be due to allergies, such as allergic reactions to bathing lotions or soaps, or allergies caused by the choice of chemical fiber underwear. If you are suffering from glans penis, the skin of the penis and testicles will also show local redness, swelling, itching and other symptoms under the stimulation of inflammation. It is recommended to seek medical attention in time to identify the cause and then further treat it under the guidance of a doctor.