You should perform a self-examination of your skin once a month. Use a full-length mirror and a hand mirror to check all areas of your body, including between toes, scalp, and other hard-to-see areas. Additionally, schedule annual skin checks with a dermatologist, or more frequently if you have risk factors.

Yes, skin cancer can develop anywhere on your body, including areas rarely exposed to sunlight such as the soles of feet, palms, under nails, and genital areas. Melanoma, in particular, can occur in these "hidden" areas. This is why comprehensive skin checks are important.

Normal moles are usually uniform in color, round or oval, and smaller than 6mm. They remain stable over time. Melanomas often show the ABCDE signs: Asymmetry, irregular Borders, multiple Colors, Diameter larger than 6mm, and Evolution (changes over time). Any changing mole should be evaluated by a dermatologist.

While UV exposure from the sun or tanning beds is the primary cause of most skin cancers, other factors can contribute. These include genetic predisposition, exposure to radiation or certain chemicals, chronic inflammatory skin conditions, and weakened immune systems. Some skin cancers can develop without significant sun exposure.

Treatment depends on the type, size, location, and stage of the cancer. Common treatments include surgical excision, Mohs surgery (for precise removal), cryotherapy (freezing), radiation therapy, topical medications, and for advanced cases, chemotherapy or immunotherapy. Early-stage skin cancers often require only minor surgery with excellent cure rates.