Has anyone seen results from melasma treatment?

Lately, it seems like I suddenly have a lot of blemishes on my face, so it bothers me every time I look in the mirror.

My skin wasn't exactly clear to begin with, but recently my cheeks have looked particularly patchy, so even if I cover it up with makeup, it's still noticeable.

I'm still in my 20s, and I wonder if I really have to worry about things like this already, and it's stressing me out for no reason.

I'm looking into melasma treatment, but looking at it, I can't really tell if it's melasma or just blemishes.

If I go to the hospital, will they determine the treatment method for melasma after examining my skin condition?

I am also curious if the melasma treatment shows immediate results or if I need to receive it multiple times.

My skin is sensitive, so I want to avoid anything too irritating. For those of you who have tried melasma treatment, what was your experience like?

I am curious if the melasma treatment was actually effective, and I would like to know if there are any precautions I should take while managing it.

I'm curious if anyone else who suddenly started getting self-conscious about melasma like me has tried treatment.