Hairfall: Alopecia Areata
It Is a type of hair loss or baldness characterized by patchy hair loss. In some cases, total baldness develops. In many cases, the hair re-grows, typically after several months. In some cases, the hair loss is permanent. It is an autoimmune disorder where the disordered immune system of the patient attacks the hair follicle of its own.
The immune system makes white blood cells (lymphocytes) and antibodies to protect against foreign objects such as bacteria, viruses, and other germs. In autoimmune disease, the immune system mistakes part or parts of the body as foreign.
It is not known why it is common for only certain areas of the scalp to be affected. Also, the affected hair follicles are not destroyed. Affected hair follicles are capable of making normal hair again if the immune reaction goes and the situation returns to normal.
It is not known why alopecia areata or other autoimmune diseases occur. It is thought that something triggers the immune system to react against one or more of the body's own tissues.
Possible triggers include: viruses, infection, medicines, or other environmental factors. .
- Diffuse alopecia areata - Diffuse hair loss all over the scalp
- Alopecia areata monolocularis - Hair loss restricted to single spot
- Alopecia areata multilocularis - Hair loss in multiple spots
- Alopecia areata barbae - Hair loss on beard
- Alopecia totalis - No hairs on scalp
- Alopecia universalis - No hairs on body including pubic hairs
Note: We are giving only a brief description of each disease for your quick reference with some best related photographs where needed.