Alopecia universalis

Alopecia areata refers to the autoimmune skin condition that results in the loss of hair on the scalp and on the body. Alopecia totalis is a progression of Alopecia areatathat results in total hair loss of the scalp. Alopecia universalis is a progression of Alopecia areata that results in total hair loss of the body.

Not really, It depends on which alopecia you are suffering from. Alopecia Areata Totallis would describe to the loss of hair throughout the scalp meanwhile Alopecia Areata Universalis refers to loss of hair throughout the body. Source http://www.alopecia-areata-cure.com.

ITs a genenic trait, he prolly inherited from his dad, "Baldness involves the state of lacking hair where it often grows, especially on the head. The most common form of baldness is a progressive hair thinning condition called androgenic alopecia or "male pattern baldness" that occurs in adult male humans and other species. The amount and patterns of baldness can vary greatly; it ranges from male and female pattern alopecia (androgenic alopecia, also called androgenetic alopecia or alopecia androgenetica), alopecia areata, which involves the loss of some of the hair from the head, and alopecia totalis, which involves the loss of all head hair, to the most extreme form, alopecia universalis, which involves the loss of all hair from the head and the body"