Male friends don't know what balanitis is. Here, balanitis refers to mucosal inflammation caused by various physical factors (trauma, friction, contraceptives, detergents, urine, etc.), long prepuce, phimosis, scale stimulation of prepuce, various infections (bacteria, fungi, amoeba, trichomonas, etc.), drug hypersensitivity, etc. So, what is the cause of balanitis? What are the symptoms...