Alopecia areata Propecia

Quite a rare disease, which, however, attracted the attention of many scientists. Interestingly it is the fact that hair loss is starting among the total well-being, just as suddenly stops. It may take a long time and lead to complete baldness in certain areas of the head or body, and can be quickly withdrawn. Most interesting is that a person who was completely bald for years, can grow normal hair in just a month. And then lose them again. Hair with alopecia areata buy propecia online as if the life of their own, leaving the head and coming back when they please.

Alopecia areata usually starts with small patches of baldness, developing into a complete loss of hair on the head (A. totalis) or all over the body (A. universalis). Hair loss may occasionally be scattered (A. diffusd), for example, limited to the beard area in men (A. barbae), or may develop not only on the head, but the hair on other parts of the body. Extensive hair loss is observed only in a small proportion of people affected by alopecia areata, which is about 7%, although in the recent past, this part of the patients was 30%.

There are three types of hair fibers on the edge of the balding patches - conical (tapered), clavate (club) in the form of an exclamation point (exclamation mark). Restores the hair is thin and non-pigmented, and only then they get a normal color and texture. Hair regeneration can occur in one area of ​​the head, while the other portion of hair loss can continue.

From 7 to 66% of people suffering from alopecia areata are also variations in the formation of nails (average 25%). Nail dystrophy can range from mild (roughness, Shcherbatov) to an extreme degree.

Alopecia areata can occur with varying degrees of destruction - from small inhomogeneous regions to extensive hair loss all over the body or diffuse thinning of hair. The reasons for these different manifestations of the disease are not well understood well.

For a long time remained open to question whether the various forms of hair loss of the same disease. The origin and development of the disease appear, there are some differences that scientists are not yet known. In this regard, intensive research, and something that has already been seen.

For example, it is known that hair follicles in different parts of the body can vary greatly in size and shape. The same hormones may have different effects on the bulb positioned at different body sites. Established that androgenic hormones cause increased hair growth, especially in the beard. These hormones seem to have the opposite effect on scalp hair follicles, which gradually leads to forms of alopecia characteristic male alopecia in which mainly affects the area of ​​the scalp.

Currently, most scientists support the theory received a leather L-mosaic, which partially explains the differences in hair follicles in different parts of the body. Cells constituting our skin, derived from a very small number of fetal cells and the skin can be divided into different parts, depending on whether they are descended from any embryonic cells. It is known that the skin and hair of the head occipital region different from the crown. Especially interesting is the fact that the form of alopecia areata, described how A1oresia lophiasis, hair loss occurs only on the back of the head, and the neighboring areas are not affected.

Of course, it is tempting to link the nature of hair loss with their origin, but no direct evidence to support this assumption does not exist. It is assumed that the pigmented hair more susceptible to alopecia areata compared with blonde hair. With the development of disease in a soulmate, or people with light brown hair, usually the first affected pigmented hair follicles, and only later going blonde hair loss. Due to this fact, some dermatologists suggest that the action of the immune system specifically directed to cells that produce melanin. When a rare form of alopecia areata (Alopecia areata naevi) Hair loss occurs in the vicinity of pigmented spots or moles. It is assumed that the region around hyperpigmented skin more susceptible to the disease.