Recently, one of my fingernails turned gray slowly, and then the other fingernail on my hand turned gray a little. I don't know why. Is it the legendary onychomycosis? I'm a little worried. I hurried to Xizang Autonomous Region Tibetan Hospital. To tell the truth, the environment here is really bad. There is rubbish everywhere, and some patients spit everywhere. The whole hospital smelled of bad soda, but thinking that I came to see a doctor, not to stay in a hotel, I hung up the phone and waited in line for treatment. When I went to see a doctor, the doctor examined me. After the test results came out, the doctor told me that I had onychomycosis, but.