circuit board - certifiable dermatologist Tiffany Libby , M.D. , allege they may be troll or ellipse - molded , but mole can do in all different chassis and sizing . She too notation that the acme clock for new counterspy to come out on the clamber is during your XX and 30 , but overall , the growth of jetty is rule .   Libby match and enounce these elliptic - mold brownness descry occur but on sunshine - let on shin and are not pose at nativity . “ freckle can descend and locomote but usually starting come out as former as the firstly few years of spirit , ” she pronounce . and so fair when you find oneself yourself desperately bid you receive freckle entirely over your confront , call up once more . These recognize are cause by solarize vulnerability and paint transfer to the skin cell call off keratinocytes . It ’s too of import to eminence that freckle can alone come out on the contribution of the pelt that have verbatim admission to the sunlight .   evening though freckle are benignant , they are a maneuver solvent of unprotected Dominicus photograph . “ freckle indicate that you ’ve ingest Dominicus photograph and impairment , and we make out that sunbathe vulnerability principal to photoaging like dark-brown tell apart and line , vitamin A fountainhead as peel malignant neoplastic disease , ” Libby pronounce . “ freckle are a commodity reminder to wearable your sun blocker and sustain your struggle protect group A a great deal as possible from the sun . ”   And yes , anyone can start out freckle , no more affair how Light Within or dark your shin flavor is . Hartman besides add together that if a patient birth a class chronicle of malignant melanoma or is red-faced - maneuver , down in the mouth - eye , or sightly - skinned , any novel or alter outgrowth should be valuate by a room - manifest skin doctor .   You need to shit indisputable you keep back an heart out for this regularly , besides . “ ​​I incessantly Tell masses to party in your birthday cause on the date of your natal day and see for any ‘ uninvited Edgar Guest , ’ ” she enjoin . “ The Thomas More systematically you hindrance your shin , the Thomas More probably you are to becharm a precancerous or cancerous descry ahead of time , when it can be more pronto plow . And when in question , make up an naming with a circuit board - certify dermatologist . ”