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1- Pathological Types of Hair Loss

Male Type (Androgenetic Alopecia) Hair Loss: Male hormone testosterone in the cells of hair follicles react with the 5-alpha-reductase enzyme to DHT (dihydrotestosterone hormone) is converted. DHT also found in the hair follicle cells to the androgen receptor (AR) and localized hair growth, prevents the development.
Vascular Endothelial Factor Growrh in hair follicles (Végh) decreases the synthesis of substances and hair healthy development, formation, which is important for nutritional capillaries smaller and withdrawn.
In this case hormonal disturbance and feeding under pressure to produce the hair follicle or the need to slow down hair can not produce the visible. In male pattern hair loss hair falls over time, the thin wire produced hair, skinny, light-colored hair begins to form.

Types of male pattern hair loss is as follows:

Type 1: Little or no decline in the front hair line is not visible.
Type 2: The temple of the balding or hair will stay at is the deep recession.
Type 3: The decline is even up to the middle of the front hair line:
Type 4: The front hair line and temporal decline in the bald areas on the hill and has expanded significantly.
Type 5: The front hair line and the middle line has expanded the bald areas.
Type 6: Type 5 is shown the further expansion and confluence of bald areas are seen.
Type 7: Hair line is expanded to the rear, where there is hair on the back and on the sides of dilution has occurred.

Telogen Effluvium Hair cycle phases one and the last one entered the telogen phase is a result of the early symptoms is needed. Compared to men, women more common in these disorders are psychological stress, shock, diet, birth control pills, use of, or termination, to give birth, the emotional problems such as the causes of hair resting phase shortens, and the telogen phase earlier than usual entered causes. Telogen Effluvium covering the entire scalp hair loss. Age condition is not seen and experienced stress due to hormonal changes can be seen.

Anagen Effluvium: Insecticide poisoning, boric acid, arsenic, colchicine use, some plant poisons, severe hunger, radiation causes include anagen effluvium. Hair in the anagen phase of the hair cycle is destroyed, and the telogen phase jumps. In this condition, sudden and too much hair loss occurs.

Trichotillomania: People consciously experienced problems due to psychological stress or pulling the hair form of hair loss that are not unlimited. More common in women than men is a symptom. In general it is seen in the form of local hair loss. The new hair extension can be pulled up in this field are seen.

Alopecia Areata: People between the “hair-breaking”, also known as alopecia areata usually coin is seen as circular areas of hair loss. There may be one or more. Alopecia areata often heals by itself does not require treatment. The exact cause is not known pathological exogenous or endogenous stimuli of hair follicles are sensitive to stress, hormonal disorders, internal diseases triggered by factors such as alopecia areata is seen. High risk of recurrence is usually seen in young and middle-aged adults is a disorder.

Diffuse alopecia: All hair loss on the scalp are emitted. Until the patient reaches the size difference will not be disturbed and the course is variable depending on the person.

Fungal Infections (Tinea capitis): Fungal infections in children redness, scaling, and has resulted in patchy hair loss. After medical treatment, the hair starts to occur again.

Traction Alopecia: Generally, women’s hair is composed of tightly binding, and in similar situations. Hair follicles are composed in such cases with chronic withdrawal. Along the hairline is formed at a high rate.

Thyroid Disease: Thyroid gland secretes thyroid hormones which was more or less due to the loss of hair can be seen. Thyroid hormone effects hair loss by 10% to be said. Thyroid disorders after treatment of hair loss problems are eliminated.

2- Pathological Diagnosis of Hair Loss

Non invasive methods:

Have experienced the problems of patients receiving detailed information about the symptoms in detail to learn and other details will help in the diagnosis. Locally referred to as scalp scaling erythema, redness and inflamaso is checked, seborrheic dermatitis, psoriasis or lichen presence of dermatological diseases, such as are tested. Dermatoscopy or scalp and hair with microscopic structure of the system are examined.

Manual examination of the scalp

Semi-invasive methods:

Trichogram Test: 5 days and not scanned for washing the hair from the scalp and hair follicles are taken. Said to be mildly painful method. Trichogram test samples taken from two different fields are made. The taken samples are evaluated by microscope and diagnosed.

Phototrichogram Test: 1 mm of shortening the length of the hair periodically with the photographs taken at diagnosis is made​​.

Phototrichogram test that can be performed manually with trichosacn programs can also be done in an automated manner.

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