I'm curious about identifying the cause of my suddenly darkened freckles and how to manage them.

I have always thought I took good care of my skin, but recently, I have noticed a significant increase in blemishes around my eyes and the bridge of my nose, causing me great distress every time I look in the mirror. I feel that identifying the cause of the particularly prominent pigmentation—specifically the freckles—is my top priority, so I am currently searching for various information regarding their causes. I am confused because it is difficult to distinguish whether they are simply melasma or another pigmentation disorder, so I am seriously considering visiting a doctor soon to confirm the exact cause. I have tried consistently applying whitening products at home, but the pigmentation that has already settled deeply does not disappear easily, which is very frustrating. I have heard that if left untreated without properly identifying the cause, the affected area can spread, so I now want to seek professional help and start treatment using laser equipment that can effectively address the issue down to the roots. With a desperate desire to return to clean and clear skin, I am eagerly awaiting the day when I can find the optimal treatment method suited for me and confidently go out without makeup.