Condition the hair depends on the state of the whole body, so healthy, even in low maintenance hair looks good. Modern care products can give healthy hair Hair: structure, characteristics of growth and development   extra shine and volume. And what do you do if your hair dull, brittle, and in large numbers are on the comb? In this case, you need to look for the cause of violations, and this can only be done by the doctor.

What is the hair and as they grow

Hair - a horny threadlike appendages of skin that cover the entire surface except for a few places (palms, soles, red border of the lips, nipples, and so on). In most of the head hair is arranged in groups of 2-6, their density is uneven. Total on the head of an adult about 100 thousand hair, the most dense - in the parietal and occipital regions and less dense - on the temporal.

The hair distinguish stem protruding above the surface of the skin and the root, located in the skin, thickening of the ending - bulb. Root enclosed in the hair follicle or follicles, which expands to the skin surface, forming a funnel. At the bottom of the funnel into the follicle opens a sebaceous gland duct, and a fan-shaped fade smooth (as in the internal organs and vessel walls) bundles that end in the middle layer of skin (dermis). Each hair there from a few months to four years or more, then the bulb gradually atrophy (shrink) and the hair falls out by the root. New hair grows at a rate of one centimeter per month.

Hair growth is regulated by the nervous and endocrine systems, it stimulates certain hormones (eg thyroid hormone). Effect on hair growth composition of the food, drugs (arsenic, vitamin A, etc.), as well as physical and chemical factors (ultraviolet rays, ionizing radiation). Hair grows faster in warm weather.

Causes of hair loss

Premature hair loss associated with some disorders in the body, called alopecia. Causes of hair loss can be very different: increased blood levels of male sex hormones, seborrhea, malnutrition, lack of vitamins and minerals, acute illness, childbirth, surgery, endocrine disorders, scarring of the scalp (eg, after the boil), skin disease heads, intake of various drugs, inhibit the growth of the hair, the wrong treatment (perms, coloring, frequent blow-drying, and so on). Finally, there is an inherent lack of hair or thinning them.

Premature hair loss is associated with high concentration of male sex hormones

This type of alopecia usually develops on the scalp in men young and middle-aged. It occurs in women at various hormonal disorders Hormonal disorders: causes and the most frequent disease .

The reason for this alopecia - male sex hormone testosterone and its elevated blood contributes to hair loss. Hair loss begins gradually, with the frontal and parietal areas, then move on to other areas of the skin. In this form of alopecia, hair growth is not restored, but you can slow down hair loss systematic restorative treatment. We should not wear tight headgear.

Loss of hair on the background of seborrhea

Hair begins to fall on background of seborrheic dermatitis - chronic inflammatory skin disease associated with an increase in number and change the chemical composition of sebum, which in turn is related to hormonal disorders. Seborrhea most often occurs in adolescence and young adulthood. The reason for it - the nervous and endocrine disorders occurring in puberty. In this form of hair loss it is very important to timely treatment of seborrhea Seborrhea - treatment is not complicated, but mandatory . Restorative treatment is carried out, be sure to come to light and being treated chronic gastrointestinal disease and chronic foci of infection. Topically applied medications containing sulfur. If the inflammatory process ends with skin changes (eg appearance of her scars or areas of atrophy - shrinkage), then in these areas do not grow hair.

Loss of hair on the background of scars and atrophic skin changes

Scar alopecia comes to scar-altered areas of the skin after healing boils, deep fungal infections of the skin (for example, deep trihofitii), lupus erythematosus, trauma, and so on.

Atrophic areata occurs in the field of constant pressure (tight headdress), tension or hair after using X-rays.

Alopecia hair loss

Alopecia areata is characterized by a continuous loss of long hair on the sharply limited area of ​​the scalp. The absence of inflammation and any complaints on the part of the patient. The occurrence of this type of hair loss is associated with disorders of the nervous and endocrine systems. Often this type of hair loss occurs after severe trauma, on the background of endocrine diseases and chronic foci of infection. The treatment of such alopecia - is the identification and treatment of foci of infection and various endocrine diseases, and eliminating sources of stress.

Hair loss and rough handling

Often hair falls just at the wrong address with them, such as coloring, perms, frequent drying under a hair dryer, wearing wigs, false hair is pulled taut hair parting in the same place. All this contributes to thinning of hair and dehydration. Therefore, the hair is periodically necessary to rest, giving up on time from traumatic procedures.

To understand why you have hair fall out, you need to see a doctor.

Galina Romanenko

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