What is the precursor of alopecia areata?

Alopecia areata can cause severe local hair loss, a condition of baldness. We know that this problem will have a great impact on the patient's life, work, and interpersonal relationships, so we need to understand which diseases are causing it. For example, endocrine abnormalities, low immune function, or poor blood circulation to the scalp may all cause alopecia areata.

2. Impaired immune function Many diseases caused by immune system disorders, such as vitiligo common, 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.

3. Focal 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 under its 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.

4. Poor blood circulation to the scalp . Some experts have found clinically that if a craniotomy is performed or the skull is not properly matched to the scalp, the scalp will be too tense, which will cause poor local blood flow, causing 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.