Hair loss refers to  refers to a loss of hair from part of the head or body.
I thought only males lost hair, but I'm female and my hair is much thinner than it used to be.
It happens to the head
I think it happens elsewhere, too.  My dad is in his 80s, and he literally has NO hair on his legs anymore!
Hair loss
Hair loss, also known as alopecia or baldness, refers to a loss of hair from part of the head or body. Typically at least the head is involved. The severity of hair loss can vary from a small area to the entire body. Typically inflammation or scarring is not present. Hair loss in some people causes psychological distress.
Common types include: male-pattern hair loss, female-pattern hair loss, alopecia areata, and a thinning of hair known as telogen effluvium. The cause
the same "follicle density" as a mouse, but it just so happens to be genetically predisposed to stop at the head and not continue down the body. There are three types of hair: ground hair, guard hair, and whiskers. "Ground hair is used primarily as insulation and is soft, while guard hair is for protection from the elements and tends to be coarse." Both ground hair and guard hair are classified as fur. Because human hair acts as both, it can technically be called "fur