Clinically, it is mainly manifested as sudden patchy alopecia with clear boundaries, no scar and no inflammatory reaction in the alopecia area.
The treatment of alopecia areata can be divided into general treatment and drug treatment. In general treatment, primary diseases, such as thyroid disease, neurasthenia and infection, should be actively treated. And avoid mental stress as much as possible to ensure adequate sleep. Drug treatment can be selected according to the degree of alopecia. The alopecia area is less than 50%, corticosteroids can be selected for external use, or minoxidil solution can be injected into the skin lesions for external use. If the alopecia area is more than 50%, PUVA can be selected, and corticosteroids and cyclosporine can be used systematically.