The redness and pain of the glans is considered to be related to glansitis, unclean sex, allergy and other factors, you can go to the hospital in time for examination to clarify the cause of the disease, and then consult the doctor in time. 1. Glans inflammation: usually due to the glans after inflammation, stimulate the skin around the glans, and then the phenomenon of glans redness and pain, glans inflammation may appear swelling, pain and other symptoms. 2. unclean sex: usually due to unclean sex, will stimulate the local mucous membrane of the glans, and then cause the phenomenon of glans redness and pain, unclean sex may make the human body infected with human papillomavirus after the emergence of condyloma acuminatum and other diseases. 3. allergy: may be due to the skin around the glans contact allergens, under the stimulation of allergens, which in turn led to the phenomenon of glans redness and pain, allergy will generally appear itching, pain, fever and other symptoms. If the phenomenon of glans redness and pain, you should go to the hospital in a timely manner to avoid adverse consequences, daily life, should be scientific and regular work and rest, appropriate to participate in physical exercise, a reasonable diet, balanced nutrition.