No, freckles cannot be cancerous. The important thing is to see a dermatologist, so the dermatologist can distinguish freckles from brown spots that may be pre-cancerous or cancerous.
Visit a Dermatologist
What I tell patients to do is before embarking on freckle treatment is to simply visit their dermatologist so that they can give their skin a look and see if there is anything that needs to be sampled. We need to do this before the skin is treated because once the skin is treated by a laser, spots will not look the same.
Hard to Decipher Freckles from other Spots
The problem is that non-dermatologists, or even dermatologists, often have a hard time distinguishing brown spots that need closer attention from brown spots that do not. So see your dermatologist before embarking on treatment of any brown spots, including freckles.
The information contained in the above article
is purely for educational purposes and is not intended to provide
any medical advice. Always consult with your physician before having
any medical procedure performed.