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alopecia

Alopecia is a medical term for hair loss leaving the partially or completely bare skin. Baldness or androgenetic alopecia is the most common form of hair loss. It affects mostly men. It is a natural phenomenon strongly determined by heredity. Other forms of alopecia can be a health problem or be caused by medications, for example.
Some people choose to undertake treatment to stimulate regrowth or limit the fall. The hair is culturally associated with the power of seduction, health and vitality, treatment of alopecia of great interest. However, you should know that the result is not always satisfactory. Hair transplantation may then be the last resort.

Types of Alopecia
The main forms of alopecia and their causes. Although alopecia affects mainly the hair, it can occur on any hair-bearing area of ​​the body.

Baldness or androgenetic alopecia. About a third of Caucasian men have baldness at the age of 30 years, half at the age of 50 years and about 80% from 70 ans3.Chez men, baldness is characterized by progressive decline in hairline, the top front. Sometimes it occurs rather at the top of the head. Baldness can begin as early as the late teens;

Women are less likely to suffer from baldness. At age 30, it affects 2% to 5% of women and almost 40% at the age of 70 years.4. Female baldness looks different: all the hair from the top of the skull becomes increasingly sparse. Although it is often reported that hair loss tends to increase from the menopause, it is not apparent in epidemiological studies conducted to date

Scarring alopecia. Alopecia can be caused by a permanent injury of the scalp due to an illness or infection of the skin (lupus, psoriasis, lichen planus, etc..). Inflammatory reactions that occur in the skin can destroy hair follicles. Ringworm, a fungal infection of the scalp is the most common cause of alopecia in children causes. However, among them there is regrowth in most cases;

Ringworm. Ringworm, a fungal infection of the scalp is the most common cause of alopecia in children causes. However, among them there is regrowth in most cases;
Alopecia areata. Alopecia areata, alopecia or sclerosis is an autoimmune disease. It recognizes the complete loss of hair or hair on small areas of skin. There are sometimes pushes, but relapse is always possible for months or years later. Universal alopecia (loss of all body hair) is very rare. For more information, see our fact sheet areata;

Telogen effluvium. It is a sudden and temporary hair loss as a result of a physical or emotional shock, pregnancy, surgery, a significant weight loss, high fever, etc.. Up to 30% of hair fall prematurely into the resting phase and then fall. Once past the stress, the hair follicles back into active phase. However, this can take a few months;

Congenital alopecia. Very rare, it can especially be attributed to the lack of hair roots or an abnormality of the hair shaft. Mutations in the gene P2RY5 be responsible for any of these inherited forms called hypotrichosis simplex, which begins in childhood in two sexes. This gene participate in the formation of a receptor that plays a role in hair growth;

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