The glans is also known as the coronal sulcus, and itching in this location is often caused by localized infections or allergies, medication irritation and so on. 1. Infection: infection is the most common cause of coronal groove itching, bacteria, mold, trichomonas and other pathogenic microbial infections, will lead to local inflammatory reaction, thus causing itching symptoms, serious ulceration, pus. 2. Allergy: Some patients are allergic to soap and other cleaning products or condom allergy can also lead to itching symptoms in the coronal position. 3. Drug stimulation: some patients are due to the use of certain stimulating drugs, or sanitary products caused by stimulation. Overall, if the itchy symptoms of the coronary groove need to pay attention to, go to the hospital in time to check the cause of the cause of treatment.