I seem to have, particularly on my upper back, arms and chest. Just wondering how concerned I should be about this. Also, how often is it advised to see a derm for skin checks?
I think you should check your skin every month at least and monitor changes. I do this frequently. You know your body better than anyone else so it makes sense to monitor your moles
but if you havent seen a dermatologist maybe see one soon and have them do a full check. They may monitor your moles using a mole map or photos of unusual ones so they can track changes.
Aside from monitoring the moles with map and photographs, it would also be good to know the ABCDE rule. A for asymmetry, B for border, C for color , D for diameter and E for elevation. Normal moles or freckles are completely symmetrical and the border should be smooth and not blurry. A mole that is more than one hue is suspicious and needs to be evaluated by a doctor. If it is larger than a pencil eraser (about 1/4 inch), and is raised above the surface and has an uneven surface, this should also be evaluated by your doctor.