Men with small bumps within the pubic hair around the root of the penis and itchy may be the presence of folliculitis, scabies nodules, as well as genital herpes, ringworm and other diseases, it is recommended that further examination. 1. Folliculitis: Because the skin follicles and sebaceous glands at the root of the penis are widely distributed, so if you don’t pay attention to personal cleanliness and hygiene, it may lead to the emergence of fungal infections, folliculitis and other conditions, causing itching. 2. Scabies nodules: If you accidentally come into contact with scabies through direct contact or indirectly through clothing, etc., it may cause scabies nodules to appear on the skin at the root of the penis, accompanied by itching. 3. In addition, if there is unclean sex, poor hygiene, etc., it is not excluded that herpes virus infection leads to the appearance of genital herpes or jock itch.