Publisher: Kenneth Kee
Publication Date: July 06, 2017
Binding: Kobo eBook
Alopecia areata is a medical disorder that produces round patches of baldness.
It can result in total hair loss( alopecia totalis).
In some patients, total baldness develops.
In many patients, the hair re-grows, normally after several months.
In some patients, the hair loss is permanent.
Alopecia means loss of hair or baldness.
Alopecia areata is one form of hair loss.
Alopecia areata can happen at any age but most patients first get it as teenagers and children.
At least 50% of the people with alopecia areata form their first patch of hair loss before they are 21.
Males and females are identically affected.
The disorder tends to be milder when it first forms at an older age.
Alopecia areata is believed to be an autoimmune disorder.
This happens when the immune system falsely attacks and destroys healthy body tissue.
In people with alopecia areata, many white blood cells get together around the affected hair roots (hair follicles) which are mistaken as foreign.
This causes some mild inflammation.
The inflammation results in hairs becoming weak and falling out to produce the bald patches.
It is not known why it is frequent for only certain areas of the scalp to be affected.
Also, the involved hair follicles are not damaged.
The involved hair follicles are capable of producing normal hair again if the immune reaction goes away and the disorder returns to normal.
It is not known why alopecia areata or other autoimmune diseases happen.
It is believed that something stimulates the immune system to react against one or more of the body's own tissues.
Possible stimuli are viruses, infection, medicines or other environmental factors.
There is also a genetic factor which makes some people more vulnerable to autoimmune diseases.
Hair loss is normally the only symptom.
The normal pattern is for one or more bald patches to occur on the ...