Swelling of the glans may be a symptom due to allergic diseases, or inflammation of the glans, which can easily cause allergic diseases because the skin of the glans is very thin. If the patient is allergic, the swelling of the glans is likely to be caused by allergic diseases. If you don’t change your underwear for a long time or wear new underwear it can easily cause infection, which in turn can cause inflammation. Inflammation of the glans will lead to local congestion and edema, and increased vascular permeability, so the swelling of the glans will be more obvious. To eliminate glans swelling should keep the local clean to prevent secondary infection, you can use 3% boric acid water or 0.1% Revnur wet compress on the affected area, non-infected patients can be treated with topical corticosteroids.