What are the causes of alopecia areata?

In general, alopecia areata may be associated with genetic factors, kidney deficiency, folliculitis, seborrheic dermatitis, psoriasis, and other causes. It is recommended to seek medical attention promptly, identify the underlying cause, and receive symptomatic treatment under the guidance of a qualified physician. The specific analysis is as follows:

1. Genetics

Alopecia areata has a certain hereditary component and may be related to specific gene mutations. These mutations might affect the hair follicle growth cycle, making follicles more susceptible to external factors and leading to hair loss. Treatment options under a doctor's advice may include topical medications such as minoxidil solution, dithranol ointment, and prednisone acetate tablets.

2. Kidney Deficiency

Chronic fatigue, aging, physical weakness, or excessive sexual activity may lead to kidney deficiency, resulting in insufficient kidney essence that fails to nourish the hair, thus causing hair loss and the development of alopecia areata. This condition may also be accompanied by symptoms such as lower back and knee soreness, insomnia with frequent dreams, and memory decline. Medications such as acetaminophen tablets, estazolam tablets, and diazepam tablets may be used under medical supervision.

3. Folliculitis

Folliculitis is an inflammation of the hair follicles caused by bacterial, fungal, or viral infections. The inflammation can damage the follicular structure, impair normal follicular function, prevent normal hair growth, and ultimately lead to alopecia areata. Symptoms may include redness, swelling, pain, and itching around the hair follicles. Treatment should be conducted under medical guidance using medications such as mupirocin ointment, econazole nitrate cream, and clindamycin phosphate gel.

4. Seborrheic Dermatitis

This is a chronic skin inflammation caused by excessive sebum production and imbalances in the skin microbiome. Excess sebum can clog hair follicles, leading to follicular atrophy and hair loss, which may result in alopecia areata. Additional symptoms may include scalp itching, oiliness, and flaking. Treatment under medical direction may involve ketoconazole shampoo, compound vitamin B, and tacrolimus ointment.

5. Psoriasis

Psoriasis is a skin disorder caused by a combination of genetic, immune, infectious, environmental, and psychological stress factors. It disrupts normal skin metabolism and immune function, damaging hair follicles and causing hair loss, eventually leading to alopecia areata. Common accompanying symptoms include skin erythema, scaling, and itching. Treatment under a doctor’s recommendation may include tretinoin cream, calcipotriol ointment, and tazarotene.

To reduce the risk of alopecia areata and promote healthy hair, it is important to maintain a healthy lifestyle, avoid excessive fatigue, eat a balanced diet, keep the scalp clean, reduce mental stress, and undergo regular health check-ups to detect and treat any conditions related to alopecia areata in a timely manner.