What causes gray nail (onychomycosis)?

Jun 19, 2024 Source: Cainiu Health
Disease description:

I can't quite remember when I first got onychomycosis (gray nail), and I've never gone to the hospital for it. Recently, I want to learn more about how onychomycosis develops. Could you please tell me what causes onychomycosis?

Doctor's answer (1)
Dr. Wang Xiaoyan
Onychomycosis is primarily caused by fungal infection, and its development involves the following factors: 1. Fungal infection: Onychomycosis is a fungal infectious disease, commonly caused by dermatophytes, yeasts, and non-dermatophyte molds. 2. Personal habits: Individual behaviors such as wearing non-breathable shoes and socks for prolonged periods, frequent manicures, or poor hand hygiene may increase susceptibility to fungal nail infections. 3. Medical conditions: Certain diseases, including nail abnormalities, peripheral vascular disease, and diabetes, may also elevate the risk of developing onychomycosis. 4. Environmental factors: Prolonged exposure to warm, moist environments—such as public swimming pools and showers—can promote fungal growth and increase the likelihood of infection. The development of onychomycosis is closely associated with various factors, including fungal infection, personal habits, underlying medical conditions, and environmental influences. Therefore, prevention should involve multiple strategies, including maintaining good personal hygiene, avoiding prolonged exposure to damp environments, and timely treatment of related medical conditions.