Men with itchy pubic hair roots may be caused by folliculitis, pubic lice disease, fungal infections, etc., and should consult a doctor in time to find out the cause. 1. Folliculitis: due to damaged hair follicles, skin adverse stimulation and other conditions can make the skin barrier function is impaired, resulting in bacteria easily invade the skin. It manifests as red papules or pustules centered on hair follicles, and sometimes the pustules may rupture and bleed, and there may be different degrees of itching or pain. 2. Pubic lice disease: a parasitic disease caused by pubic lice biting the skin near the pubic area and anus, manifested by itching, red rash and green ecchymosis at the infected area. 3. Fungal infection: superficial fungus (ringworm) invades the skin, which manifests itself as red spots, pimples, blisters and flaking on the skin, and causes obvious itching. It is difficult to judge the disease by this symptom alone, and it is not excluded that it is caused by other factors. It is recommended that the patient consult a doctor in time to identify the cause of the disease and give targeted treatment.