Frequently linked to poor hygiene, balanitis is a prevalent irritation of the glans of the penis, aka the penis head. It can happen to anyone who has a penis, but balanitis is an especially common skin disorder for males who are uncircumcised. It affects 1 in 25 boys. Children younger than 4 years old are especially prone to balanitis, at least in part because they've often not yet learned proper hygiene.
One in 30 uncircumcised adult men will develop balanitis at some point. Overall, about 10 percent of men will experience balanitis, according to Cleveland Clinic.