Every autumn and winter, for many people, there will be hair loss, especially some male people will be particularly serious baldness in the middle age, so why do men lose their hair and what are the reasons for it?
What causes men's hair loss
1. Androgenic alopecia
The skin hair follicle is the target organ of androgen action, and the scalp is the place with high density of androgen receptor, where androgen 'likes' to gather. Therefore, androgenic alopecia is the most common type of alopecia, 95% of alopecia cases belong to this type. The level of dihydrotestosterone in serum and scalp was higher than that in normal people. Under the long-term effect of dihydrotestosterone, the hair follicles in scalp, forehead, especially in temporal lobe and top of hair showed progressive atrophy and diminution. The hair gradually became thinner and softer, the color became lighter and the hair decreased. This type of alopecia results in hairline loss and mild decapitation of the head.
2. Hair loss caused by drugs
Some prescription drugs may cause some people to lose their hair. The treatment of cancer will stop the growth of hair and fall off during the treatment. After stopping the medicine or after the treatment, the hair may grow again. If sudden hair loss occurs at the beginning of taking medicine, consult the doctor in time and make appropriate changes to the treatment plan.
3. Hair loss caused by pathology, surgery or disease
One to three months after high fever, hair loss will be caused by serious infectious diseases or surgical operations; hair loss will continue to be caused by some chronic diseases; hair loss will also be caused by abnormal thyroid function; some immune diseases, such as severe discoid lupus erythematosus on the scalp, will also cause 'very injury' to the scalp hair follicle; mechanical avulsion, burn, chronic deep bacterial or fungal infection will make the head 'desolate'.
4. Alopecia areata nervosa
The cause of this type of hair loss is not clear. This kind of hair loss is flake like, forming a smooth, round bald face with the size of copper coin. The neurotic alopecia areata should pay attention to mental care.
5. Genetic causes
Alopecia is not only related to stress, but also to heredity.