The redness and itching of the coronal groove is commonly caused by glansitis, glans eczema, condyloma acuminatum and so on. You can use clotrimazole cream, erythromycin ointment, mometasone furoate cream and so on as prescribed by the doctor. 1. Glans: usually associated with bacterial infection or urine stimulation, the local will appear some red pimples, and accompanied by redness or itching symptoms, there will be glans, coronary groove red and itchy. Attention should be paid to clean, can use clotrimazole cream, erythromycin ointment and other drugs for treatment. 2. Glans eczema: it may be caused by allergy or local immune disorder, or often wear non-cotton underwear, resulting in red pimples with itching and other symptoms in the affected area, so the glans is red and itchy. You can apply topical medication such as mometasone furoate cream to treat it and relieve the discomfort. 3. Condyloma acuminatum: usually caused by human papilloma virus infection. Some patients are accompanied by itching symptoms, so there is redness and itching of the glans coronal groove. You can use salicylic acid for treatment, as well as acyclovir cream and interferon cream to relieve discomfort. The symptoms of redness and itching in the coronal sulcus should seek medical advice, follow the doctor’s instructions for further examination, and carry out targeted treatment or therapy under the guidance of the doctor, do not self-medication.