The redness and swelling of the inner side of the foreskin that hurts when you touch it may be caused by excessive friction, in addition to the consideration of the existence of the foreskin glans, allergies, folliculitis, etc., so it is recommended to go to the hospital for further examination. 1. In general, the inner part of the foreskin is swollen and painful when touched, mostly due to excessive masturbation, excessive sexual friction and so on, resulting in redness and swelling of the foreskin, and therefore pain, generally do not need special treatment, avoid friction, pay attention to hygiene can be. 2. For patients who are circumcised or circumcised, if you don’t pay attention to personal hygiene of the perineum, you can consider that there is a chronic irritation caused by the accumulation of foreskin scales, which leads to the redness, swelling and tenderness of the foreskin. 3. In addition, if due to drug allergies, and usually do not pay attention to cleaning, resulting in the emergence of folliculitis, etc., may also cause the inner side of the foreskin red, swollen and painful situation. Therefore, it is recommended to go to the hospital for further examination and clear diagnosis.