I can't tell the difference between melasma and blemishes, so I don't know what kind of treatment I should get.

Over the past few months, dark spots have appeared on my cheeks, but I absolutely cannot tell the difference on my own whether they are melasma or blemishes. I've heard that melasma tends to spread widely while blemishes are distinct like moles, but in my case, it feels difficult to say exactly which one it is.

I'm not really sure what the cause is. It seems like it appeared suddenly even though I haven't been exposed to much UV rays, and it also seems like it might have started after a period of severe stress. I've heard that the necessary treatment varies depending on the type of melasma or blemishes, so I'm wondering if they need to see my condition in person to know for sure, or if they can determine the right direction just by me describing my symptoms. Melasma and blemishes are really frustrating!