Answers: I know a man. a neighbor... who with his first wife have 3 children... and 1 child with his current wife. During respectively pregnancy, HE developed temporary fuzz loss. It was lately a patch of a bald spot next to each pregnancy. The mane grew back respectively time after the baby be born.
So I would say stress would be a factor... or apprehension about something.
it can be alopecia from intentional cause: dyes, hair sprays etc
most cases, it doesn't enjoy to be hereditary