Got a small patch on your head where no hair grows?

There are generally many reasons for hair loss. If there is a small area on your head where hair suddenly stops growing, it is likely to be alopecia areata. There are many reasons for alopecia areata, such as high stress in life, bad mood, or irregular diet, etc. However, don't worry too much. Relax your mind, go out for fun to relieve stress, and eat more foods with high vitamin content. Alopecia areata can be treated.

What is the cause of alopecia areata?

1. Mental factors

The main cause of alopecia areata is due to neurological factors. After years of research by relevant experts, it has been found that a large part of the cause of alopecia areata is due to long-term mental anxiety or stimulation and environmental changes.

The main cause of alopecia areata is due to neurological factors.

But in the end it is more closely related to neural factors, and is generally caused by disorders of the autonomic nervous system or central nervous system.

Alopecia areata is more likely to occur or worsen after concussion or trauma. Many scholars have found that the rate of EEG abnormalities in patients with alopecia areata is generally higher than that of normal people.

According to relevant expert research, patients with alopecia areata caused by mental factors show symptoms of insufficient blood supply to the scalp.

It may also be due to the patient's mental stress, which leads to autonomic dysfunction, increased sympathetic nerve tension, continuous capillary contraction, blood circulation disorders at the root of the hair, and decreased cell function in the seed layer of the hair follicles.

2. Endocrine abnormalities

Alopecia areata is common among patients with thyroid disease, and is more closely related to hyperthyroidism. Alopecia areata often heals itself during pregnancy, but hair loss may recur after delivery, which is related to hormones.

3. Weak immune function

Many diseases caused by immune system disorders, such as vitiligo vulgaris, diabetes, pernicious anemia, lupus erythematosus, ulcerative colitis, idiopathic hypothyroidism, etc., are often accompanied by the occurrence of alopecia areata.

Some French experts have found that the white blood cell immune function in the peripheral blood vessels of patients with alopecia areata is low and often combined with autoimmune diseases.

Experts have found that the number of T lymphocytes in the peripheral blood vessels of patients with alopecia areata is significantly reduced, and it is a system that plays an important role in the body's cellular immune function.

Clinical and experimental studies in our hospital have shown that patients with alopecia areata have certain disorders in the humoral and cellular immunity and complement system functions.

4. Lesion infection

Clinical research by medical experts has found that focal infection can indeed cause baldness, because infection by bacteria and other factors can cause thrombosis in blood vessels or inflammation of small blood vessels, causing hair loss in the area they control due to obstruction of blood supply.

Clinical research by medical experts in China has found that the presence of impacted third molars or periapical infection can easily cause persistent alopecia areata.

5. Poor blood circulation to the scalp

Some experts have found clinically that if a craniotomy is performed or the skull is not configured properly to match the scalp, the scalp will be too tense, which will cause poor local blood flow, causing the hair to fall out easily due to insufficient nutrition and blood supply, and hair loss is easy to occur from the forehead hairline to the top of the head.