A red pimple on the foreskin that goes away in a few days is not necessarily warts, but may be related to other skin diseases such as allergies and dermatitis. Warts are caused by infection with the human papilloma virus, which in the early stages of the disease can lead to the appearance of red pimples on the affected area and gradually develop into cauliflower warts, which basically won’t disappear on their own within a few days. The possibility of allergies should be considered in the presence of such symptoms. For example, allergy caused by condom application can lead to this symptom, which may disappear on its own after stopping the use of condoms; local inflammation caused by underwear friction can also trigger this symptom, which may also disappear on its own after changing underwear. For patients, this symptom should be taken seriously and seek medical treatment as soon as possible.