If the hair loss is severe, it will make everyone feel that their own hair is becoming scarcer and scarce, and even a sloping top will appear. Most of the problems of this kind of hair loss will occur in the youth group. Hair loss is caused by high mental stress or endocrine imbalance. Even malnutrition is very likely to cause hair loss.
1. Androgenetic alopecia
is an autosomal dominant gene, and its genetic characteristics need to be mainly manifested under the effect of androgen.
2. Neurological hair loss
Hair loss often increases when psychological stress is too high. Under the effect of psychological pressure, the erector pili muscles of the body converge, the hair stands up, the autonomic nerve or the nerve center function is disordered, the hair follicles and papillae are changed and malnutrition, and the hair growth is inhibited, and the hair appears in the resting period. Hair loss.
3. Endocrine causes
Hair growth is affected by a variety of endocrine growth hormones, so when the endocrine is abnormal, it often causes hair loss symptoms, such as after giving birth, women's menopausal hair loss.
4. Hair loss due to nutritional deficiency
Hair is the main external manifestation of health. Malnutrition and abnormal basic metabolism of the body can cause changes in hair quality and hair color, severe malnutrition and even diffuse hair loss.
5. Physical hair loss
The common physical factors that cause hair loss include reflective irritants and touch radioactive elements.
6. Acid hair loss
Organic chemical elements can cause hair tone changes and even hair loss.
7. Infectious alopecia
Infections of various pathogens are a key element in hair disorders, and the key includes infections such as germs, viral infections, bacteria, cocci, and schistocephala.
8. Symptomatic alopecia
Some targeted or partial diseases can cause secondary hair loss.
9. Congenital alopecia
Hair is completely lacking or sparse due to the defects of growth and development. Patients generally have sparse and fine hair, or their hair is normal when they are born, and they will fall off before long. They can be divided into independent defects and other abnormalities.
10. Seasonal hair loss
Generally, hair loss is very easy in summer. Hair loss is caused by the expansion of skin pores due to the high temperature in summer. It is not easy to lose hair in autumn and winter. Due to the lower temperature at this stage, the skin pores close.