What are the causes of alopecia areata?
Disease description:
Recently, I noticed that my younger brother has developed alopecia areata on his head, and I would like to know what factors can cause alopecia areata.
Doctor's answer (1)
Dr. Liu Wenmin
Alopecia areata, medically referred to as "circular hair loss" or "patchy hair loss," is a common autoimmune disease primarily characterized by the sudden appearance of round or irregularly shaped hairless patches on the skin.
1. Genetic factors: Individuals with a family history of alopecia areata have a higher risk of developing the condition, indicating that genetics play a role in its occurrence.
2. Immune system abnormalities: Alopecia areata is sometimes associated with autoimmune diseases such as psoriasis and thyroid disorders. When the immune system mistakenly attacks hair follicles, hair loss occurs.
3. Psychological stress: Prolonged mental tension, anxiety, and excessive stress can also trigger alopecia areata. These psychological factors can interfere with the body's normal functions, including hair growth.
4. Environmental factors: Certain chemicals, physical stimuli (such as head injuries), infections, and drug side effects may also act as external triggers for alopecia areata.
5. Drug side effects: Certain medications, such as antiepileptic drugs and immunosuppressants, can also cause alopecia areata.
Therefore, in treating alopecia areata, individual differences must be comprehensively considered, and personalized treatment strategies should be adopted.
