What causes redness, swelling, and stabbing pain in the foreskin?

Redness, swelling, and pain in the foreskin may be caused by various factors, with common ones including phimosis (tight foreskin), balanitis or posthitis (inflammation of the foreskin), and allergic reactions. Phimosis can easily lead to bacterial growth, resulting in infection and subsequent redness, swelling, and pain. Foreskin inflammation is usually caused by bacterial infections and manifests as redness, swelling, and discomfort. Allergic reactions—for instance, to detergents or medications—can also cause redness, swelling, and pain in the foreskin. For these conditions, patients are advised to seek timely medical attention and undergo relevant examinations to determine the underlying cause. Doctors will develop an appropriate treatment plan based on the specific diagnosis, which may include antibiotic therapy, antiallergy treatment, or surgical intervention. Additionally, patients should maintain good personal hygiene, keep the affected area clean and dry, and avoid excessive irritation or friction to prevent worsening of symptoms.