Answer:

Patchy hair loss, also known as alopecia areata, is a common dermatological condition affecting both men and women of all ages. It often appears suddenly and progresses unpredictably. The primary cause is the immune system mistakenly identifying hair follicles as foreign invaders and attacking them. This halts hair growth, leading to hair loss in specific areas. Genetic predisposition, chronic stress, hormonal imbalances, and vitamin and mineral deficiencies (especially iron, zinc, biotin, and vitamin D) can exacerbate the condition. Early detection and intervention simplify treatment and increase the chances of hair regrowth.

Treatment for patchy hair loss focuses on controlling the autoimmune response and stimulating hair regrowth. Common methods include topical or injected corticosteroids into the affected areas to reduce local inflammation. Doctors may also prescribe topical medications or light therapy to promote hair growth. The ultimate goal is to stop the immune system from attacking hair follicles, allowing hair to recover.

In addition to traditional methods, modern technologies like RF microneedling and 4D laser therapy are proving effective in treating patchy hair loss. RF microneedling uses tiny needles combined with radiofrequency waves to stimulate the dermis of the scalp, improving blood circulation and regenerating hair follicles. Meanwhile, 4D laser therapy employs specific wavelengths to increase blood vessel growth, repair damaged tissue, and promote thicker, healthier hair growth. These methods are often combined with platelet-rich plasma (extracted from the patient's blood) or specialized nutrients to enhance effectiveness, particularly for those with persistent hair loss or who haven't responded well to other treatments.

A doctor uses 4D laser therapy to treat a patient's hair loss. Photo illustration: Tam Anh General Hospital

Treatment duration varies depending on the extent of hair loss and individual response. Typically, hair begins to regrow after 6-8 weeks. However, achieving full hair regrowth requires consistent treatment for 6-12 months, potentially longer in severe or recurring cases.

It's recommended to consult a dermatologist or cosmetic dermatologist at a reputable medical facility for a proper diagnosis and personalized treatment plan. Adhering to the doctor's instructions and maintaining overall health are crucial for promoting hair regrowth.

MSc. MD Vu Thi Thuy Trang

Department of Dermatology - Cosmetic Dermatology

Tam Anh General Hospital TP HCM