What Are the Causes of Alopecia Areata?

Hair loss is the phenomenon of hair loss. Normally the hair that has fallen off is in the degenerative phase and the resting phase. Because the hair entering the degenerative phase and the newly entering growth phase is constantly in dynamic balance, it can maintain a normal amount of hair. Pathological hair loss refers to abnormal or excessive hair loss for many reasons.

Basic Information

English name: baldness
Visiting department: dermatology
Multiple groups: Male, computer worker, stressful person

Common causes: Endocrine disorders, trauma, vascular dysfunction and inheritance, etc.
Common symptoms: Greasy hair, consciously itching, bald tops for men

Etiology

Androgenic alopecia

It is an autosomal dominant inheritance, and its genetic characteristics need to be manifested under the action of androgens.

2. Neurogenic alopecia

Increased hair loss often occurs when mental stress is too high. Under the influence of mental stress, the human standing hair muscles contract, the hair erects, autonomic or central nervous system disorders occur, the hair follicles and papillae change, and malnutrition results in hair growth inhibition and hair loss into the resting phase.

3. Endocrine hair loss

Hair growth is affected by a variety of endocrine hormones, so when endocrine abnormalities occur, it often causes hair loss diseases, such as postpartum and menopausal hair loss.

4. Nutritional hair loss

Hair is an external manifestation of physical conditions. Malnutrition and metabolic abnormalities in the body can cause changes in hair quality and hair color, severe malnutrition and even diffuse hair loss.

5. Physical hair loss

Common physical factors that cause hair loss include mechanical irritation and exposure to radioactive materials.

6. Chemical hair loss

Chemical factors can cause hair color changes and even hair loss.

7. Infectious hair loss

The infection of various pathogens is an important factor in hair diseases, which mainly includes infections such as bacteria, viruses, fungi, Borrelia, and parasites.

8. Symptomatic hair loss

Some systemic or local diseases can be accompanied by hair loss.

9. Congenital Hair Loss

Hair caused by developmental defects is completely missing or thin. Patients often have thin and thin hair, or hair at birth is normal, and it will soon fall out without regeneration. It can be divided into isolated defects and other deformities.

10. Seasonal hair loss

Generally, hair loss is easy in summer, because pores expand due to high temperature in summer, and hair loss is not easy in autumn and winter, because the temperature drops during this period and the pores are closed.

Hair loss treatment

1. Minoxidil can be rubbed externally, finasteride can be taken orally, and scalp hair implantation is also one of the important choices.

2. Pathological hair loss should be treated for basic diseases, and hair will grow back after physical recovery.

3. Chemical hair loss does not use irritating hair dyes, perm agents and inferior shampoos.

4. Physical hair loss Do not use plastic combs and plastic head brushes that are prone to static electricity. Wear protective caps and wash your hair in a timely manner in a polluted environment.

5. Nutritional hair loss should strengthen nutrition, eat more fruits and vegetables, kelp, mulberry, walnut kernel.

6. Fatty hair loss should eat less greasy food and strengthen physical exercise.