Penile pain may be caused by acute injury, circumcision, allergic factors, genital herpes and other factors. 1. Acute injury: penis suffered excessive pressure or external blow, resulting in local damage, it will cause penile pain, may also be accompanied by swelling, subcutaneous bruising and other symptoms. 2. Circumcision: men do not pay attention to penile hygiene, may induce circumcision, when the inflammatory substances increase, resulting in localized damage to the penis, may cause pain symptoms, accompanied by itching, redness and other symptoms. 3. Allergic factors: such as contact with some of the allergic components of the toiletries, so that the penis localized allergic reaction, may cause painful symptoms, accompanied by intense itching, scratching is easy to secondary bacterial infection. 4. Genital herpes: men have unclean sex, which may lead to the presence of herpes simplex virus infection in the penile area, causing genital herpes, which may cause localized pain in the penis, accompanied by itching, and lesions will also appear vesicles oozing. To summarize, if there are symptoms of pain in the penile area, it is recommended to consult a doctor for appropriate examination and treatment to prevent the lesion from worsening.