I'm worried because my scalp on the crown of my head is clearly visible.

Lately, I find myself self-conscious about the crown of my head every time I wash and dry my hair. I used to just ignore it, but at some point, I started feeling like my scalp was more visible than before. Even when I take photos, the crown looks thin, and it looks even worse under lighting, so it really bothers me. It doesn't seem like my scalp is hidden even when I tie my hair up or change my parting. It doesn't seem severe yet, but I'm worried it might get worse.

I looked it up online and heard that early management is crucial for crown hair loss. What methods should I look into first? I am also curious if a dermatologist can check the extent of hair loss progression through a scalp examination. I would like to know if treatment starts with medication, or if there are other methods such as scalp care or injection therapy. For those who have visited a hospital for crown hair loss, what kind of treatment did you receive? I am also curious about how long it takes to see results. I would appreciate responses from hospital staff.