My friend would like to know the causes to why he's been having erections from 9p.m. to 8 a.m. every night for the past months, no hormonal feelings?

Priapism vs normal: Presumably each night's erection hasn't lasted 11hrs. After all, any erection lasting more than 4hrs needs to be evaluated & treated emergently. If your friend is experiencing one or more erections throughout the night, that's considered normal for young men, given otherwise healthy w/peak testosterone level. As we age, we're less likely to be as healthy w/as much T, so morning erections etc decre