I want to know about hair loss diagnosis.

I've been losing hair for quite a long time. It's especially noticeable when I comb my hair or wash my hair.

However, it is not to the extent that one can clearly recognize that there is a significant lack of hair.

Anyway, since you can see the hair loss with your own eyes, I think it can be called hair loss.

Still, I wonder whether this can be considered a "disease" that requires procedures, or if it's just a level that happens to anyone and only requires management.

I want to know whether the classification above is based solely on the amount and duration of hair loss or if there are diagnostic methods using equipment or other tools.