Depends: Early skin cancer or pre-cancerous lesions are usually detected by a lesion on the skin that doesn't improve over time. Some lesions can be scaly, ulcerated, or change in appearance to make a healthcare professional become suspicious that a skin cancer is present. Melanoma is a pigmented lesion that changes in size, has border irregularity, or has lymph node involvement. See your physician.
Answered 3/15/2013
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Many symptoms: Depends on the type of skin cancer: basal cell, squamous cell, melanoma, dermatofibrisarcoma, etc. They may look like a pimple, mole, ulcer, scar, nodule, plaque, rash, pigmented, colored, etc. Appearance as well as behavior and history and location are important pieces of information that contribute to the assessment. They may be asymptomatic, bleed, itch, peel, grow, drain, invade, spread, ...
Answered 3/18/2013
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ABCD's: Remember your abcd's when thinking of melanoma. Look for moles with asymmetry boarders that are irregular color differences within the same mole diameter greater than 6mm also any new mole or old that starts to itch, bleed or ulcerate should be of concern. Another rule is the ugly duckling rule. Which refers to a mole that looks distantly different from the others on your body.
Answered 12/10/2013
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