How long does it take for the erythema to heal at the glans in men can not be generalized, the specific time is related to the cause of the erythema, the erythema may be physicochemical factors, microbial infections, or may be related to malignant diseases. Erythema caused by physical and chemical stimuli, remove the causative factor, the erythema may gradually subside after a few days. If the erythema is caused by pathological factors and the primary disease is treated, the erythema may disappear gradually. 1. Physicochemical factors: excessive friction, hot water scalding, soap, soap, stimulation of topical drugs, etc., may lead to localized erythema. If the symptoms of erythema are mild, the erythema may subside in a few days by removing the triggers. 2. Microbial infection: bacterial, viral, trichomonas and other pathogenic microbial infections may lead to local erythema. It is recommended to go to the male department and urology department of the hospital. After the primary disease is treated, the erythema may disappear gradually. The time of disappearance of erythema is related to the time of disease treatment. 3. Malignant diseases: malignant diseases such as glans eczema-like cancer and circumcision glans carcinoma can also lead to erythema on glans. Surgery can be considered in the early stage of the disease, and the erythema may gradually decrease or disappear with radiotherapy treatment after surgery. In addition to this, the use of corticosteroids causes dependent dermatitis, which may lead to erythema on the glans. It is recommended that patients do not blindly use drugs, timely to the hospital for examination, for primary disease treatment.