hair loss or hair thinning

hair loss or hair thinning

description

The term applies to alopecia hair loss or hair from any part of the body for whatever reason. There are several forms of alopecia, from the scarcity of hair baldness.

Diffuse alopecia (hair thinning) most frequently affects the elderly, both men and women.

The androgenic alopecia concerns people of all ages. Despite its masculine name, it also affects women. It is genetic, meaning that a family history of androgen alopecia is a predisposing factor. This form of hair loss is related to an excessive amount of male hormones (androgens) around the hair follicles, preventing hair growth for both men and women who are more susceptible after menopause, when the body produces less female hormones.

Most cases of hair loss are due to androgenic alopecia. Approximately 50% of men aged 50 years and 15% of women who have not yet reached menopause have androgenic alopecia more or less pronounced.

Alopecia areata or alopecia areata is characterized by some bald patches on the scalp where hair growth however is possible plates. Alopecia areata is more common in some families and it often appears in childhood. It seems that this hair loss is related to an immune disorder, that is to say, the natural defenses of the body mistakenly attacks its own tissues. Once hair loss has occurred, a new growth is blocked for weeks or months at these places. This type of alopecia sometimes occurs in people who are suffering from other diseases "autoimmune" as some thyroid disease, lupus and pernicious anemia. Sometimes, alopecia areata can cause total baldness (alopecia totalis) or complete body hair fall (alopecia universalis).

The telogen effluvium is a form of hair loss often associated with pregnancy, use of certain medications or because of surgery. It is characterized by the passage of a larger amount of hair in the resting phase (telogen), during which the hair is ready to fall. This type of alopecia usually improves spontaneously after a few months.

The scarring alopecia is a form of hair loss that causes the formation of scar areas where hair does not grow back. This type of alopecia can be caused by different factors. Fungus, for example, can leave permanent bald patches.

causes

Alopecia has many possible causes. Hair loss - temporary or permanent - can be triggered by several factors, including allergies, irritants, toxins, burns, wounds and infections. We also know that certain medications (especially anabolic steroids), chronic renal failure, radiation and chemotherapy can cause hair loss. Sometimes hair loss can be caused by an overdose of vitamin A, iron deficiency, anemia, a disorder of the thyroid gland, fever or pregnancy.

Symptoms and Complications

The scarcity of hair is the most obvious symptom of androgenic alopecia. The first male alopecia at the crown or temples, or both. Men also tend to have the front that dismantles. Women less frequently observe this phenomenon. Men can go completely bald, but in general women do not lose all their hair.

Alopecia areata is noticed by a sudden fall of hair as small round patches on the scalp. Sometimes it is facial or body hair that fall in this way. The nails of these people may be scattered small marks or have small cup-shaped depressions. This disorder often develops in spurts between which the hair and hair grows back.