Mikkilineni and Weinstock1 gave an excellent review of the usefulness of mole self-counting by patients. It would seem that this is especially useful when done by individuals in their second to fourth decades of life. However, the risk for melanoma of any patient must be considered within the context of the patient's genetic heritage, which offers an entry point into the patient's kindred for preventive cancer care.
Fusaro RM. Multiple Interpretations of Cancer Risks From Body Mole Counts in Preventive Care. Arch Dermatol. 2001;137(6):823. doi: