Glans pain, with the disease itself, may also be caused by drug stimulation. 1. The cause of the disease itself: glans itself will appear local broken skin, glans redness, pain and other symptoms, the process of applying medicine accidentally stimulate the trauma, easy to aggravate the pain. Initial symptoms are more obvious, the symptoms will be reduced after the gradual recovery of glansitis. 2. Drug stimulation: If the application is some disinfectant containing alcohol, it may produce an irritating reaction, resulting in traumatic pain. Generally, after the drug effect is fully realized, the pain will gradually disappear and return to normal, without special treatment. Patients with glans should pay attention to the way and method when applying local medicine, avoiding too much force to pull to the trauma to affect the recovery. Before applying the medicine, it is recommended to wash with warm water to ensure that the trauma is dry and clean, to reduce secondary infection, specific should follow the doctor’s instructions.