A 52 year old Caucasian man presents to the dermatologist afterhis wife noticed a dark, bleeding lesion on his back. The patientwas unaware of the lesion until his wife noticed it. Upon furtherquestioning to the patient's wife, she reports first noticing thelesion a few months prior. The lesion has since changed shape, andshe grew more concerned when she noticed the bleeding and increasedsize. The patient denies any history of atypical moles. He reportsthat he used to spend summers working as a lifeguard when he wasmuch younger. He mentions that he rarely used sunblock. On physicalexamination, a 7 mm symmetrical lesion with irregular borders andnonuniform color is observed on the right upper back.
1. What are some risk factors for this condition? Please note:there are some risk factors in the patient's history and other riskfactors that are not mentioned. List at least 5 risk factors?
