Itchy pubic hair in men may be related to folliculitis, pubic lice, contact dermatitis and other causes. 1. Folliculitis: If the hair follicles in the pubic hair area are infected by pathogens, it can cause a localized inflammatory reaction, resulting in itching of the skin at the pubic hair. 2. Pubic lice: Pubic lice are small insects that live in the genital area of the human body and can cause intense itching in the genital area and spread to other areas of the body covered with body hair. 3. Contact dermatitis: If the pubic hair area comes into contact with allergens, such as underwear containing chemical fibers, it can cause an abnormal immune response in the body, and itchy pubic hair can occur. It is recommended that men with itchy pubic hair go to the hospital in a timely manner to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.