The main causes of baldness are: 1. Long-term mental tension and anxiety lead to disorders of the scalp’s vegetative nerves, decreased vascular transport function, reduced blood supply to the scalp, and local capillary constriction that cannot supply the blood needed for hair growth, resulting in the loss of hair in patches and the formation of baldness. 2. 3. Head trauma and skin diseases of the head can lead to localized necrosis of hair follicles, resulting in baldness. There are also endocrine disorders and micronutrient deficiencies that can lead to baldness. It is recommended that you go to the hospital to have blood tests for hormone levels and trace element levels, and according to the test results, you should supplement your body’s needs appropriately, and keep your mood relaxed and get enough sleep to help you recover.