From Simple English Wikipedia, the free encyclopedia
Baldness
(also known as
alopecia
) is when someone has no hair on his or her
head
. Sometimes this is
inherited
from parents or grandparents, or it can be done on purpose. Improper use of hair extensions can also lead to
hair loss
. Some people such as
monks
or
South Korean
soldiers
shave
their head.
Baldness is most often caused by a medical
condition
known as
androgenic alopecia
. This is found in
humans
, as well as in some
animals
. When it occurs, it will mean that those affected will permanently lose some (or all) of their hair. Since some of the factors are linked to the
genes
on the
chromosome
, the condition can be seen more often with men, than with women.
A total hair loss
Alopecia totalis
is the loss of all head hair. Its cause is believed to be
autoimmune
, but many with the disorder lead relatively low stress lives.
Alopecia areata
(AA) is a condition in which hair is lost from some or all areas of the body, usually from the scalp. Because it causes bald spots on the scalp, especially in the first stages, it is sometimes called spot baldness.
Baldness is common in old aged people