Mustache hair loss

A man's mustache grows just like scalp hair--from hair follicles situated in your skin. Some men grow a mustache that's thick and full, while others' are sparse and thin, just like the variations of scalp hair from one person to the next. Illness, injury and hormonal imbalance can all cause you to suffer from mustache hair loss; in most cases your facial hair will grow back after the underlying cause is addressed.
Alopecia barbae is a limited form of a larger disorder called alopecia areata It occurs when elements of your immune system mistakenly attack the hair follicles beneath the surface of your skin and trigger the characteristic loss of small, circular patches of hair. While alopecia barbae is limited to your beard, you can develop alopecia areata on any part of your body. In some cases, alopecia areata can trigger complete loss of the hair on your head; this condition is also called alopecia totalis. When alopecia areata triggers hair loss throughout your body, the condition is called alopecia universalis.
Alopecia areata (‘baldness in spots') is a form of hair loss, usually from the scalp, although it can affect other areas of the body. The hair loss mostly remains limited to the scalp but in certain cases it can extend to eyebrows, eyelashes, facial hair (beard, moustache)give rise to bald spots anywhere in the body.
Alopecia can affect both men and women and it is not uncommon to see children affected with this disorder. Approximately 2% of the general population worldwide suffers from alopecia areata.
Alopecia areata is considered to be an auto-immune condition in which the immune system of the body (which protects the body from bacteria and viruses) mistakenly attacks the hair follicles and destroys them. This leads to hair loss in the affected area.
The commonest presentation of alopecia areata is appearance of bald patches on the scalp. In most cases, hair falls out in small, round patches about the size of a small coin. The patient may have single or multiple such patches. In some cases these patches may remain static, whereas in some cases the patches may spread to involve larger areas of the scalp. In some cases, hair loss is more extensive. Although it is not very common, the disease can progress to cause total loss of hair on the head (alopecia areata totalis) or complete loss of hair on the head, face, and rest of the body (alopecia areata universalis).
Causes
Alopecia areata is considered to be an auto-immune condition in which the immune system of the body (which protects the body from bacteria, viruses, allergens, etc.) mistakenly attacks the hair follicles and destroys them. This leads to hair loss in the affected area.
One or more of the following factors may be found responsible in cases of alopecia areata:
Hormonal cause: High levels of the male hormones (in men as well as in women) can trigger the onset of alopecia
Thyroid disorders
Drugs and medications:
1. Commonest is this group are chemotherapy drugs, certain medicines used for gout, arthritis, depression, hypertension, ischemic heart disease, etc
2. Large doses of Vitamin A can also trigger alopecia
3. Oral contraceptive pills
4. Chemical treatment of hair, exposure of hair to excessive heat
5. Low levels of iron
6. Poor protein intake
7. Physical stress: After undergoing some major surgery, or due to some chronic illness, rapid weight loss due to dieting
8. Fungal infection of the scalp
 
Mustache&Beard hair loss treatment in India---
HRS treatment developed by Dr Ajay Rajguru based on nature Herbs and Homeopathy is very useful for this. New hair follicales on Mustache &Beard starts after 3 month.  
.