Genetics
While women and those with darker skin color are more likely to get melasma, those who have family members with melasma are also more likely to get it, as genetics play a role. That said, even if someone is predisposed to melasma, it doesn’t mean that you automatically get melasma. Interestingly enough, most identical twins tend to have melasma, which is another strange fact regarding the skin disorder. Melanocytes can be somewhat odd as there are various factors that can affect the potential of a skin disorder like melasma, but it’s never a sure thing.
As far as most health disorders go, genetics can play a large factor, such as those with a predisposition to diabetes being far more likely to get it than those who aren’t. For example, those genetically predisposed might only need to have the slightest fondness for sweets to get hit, while those who aren’t will need to really fill up on sugary treats for diabetes to pop up. Also, in the case of melasma, a fair skin color will make it less likely to get the skin disorder, even if you might have family members with melasma.
