Some of the most common signs of skin cancer may include a reddish patch that refuses to heal, a sore that bleeds seems to heal then reemerges, may look like a mole on the skin but develops much faster or appearance of a large spot with dark speckles, as stated by the American Academy of Dermatology. There are different types of cancer and each may have a unique combination of symptoms.
Basal cell carcinoma is the most commonly experienced type of cancer in the world today, and it mostly affects areas that are frequently exposed to the sun. These include the arms, face, scalp and neck. Initially, it appears like a reddish patch on the skin. In some cases, it may heal then return after a short while. Sometimes, it appears as a bunch of scaly sores that develop slowly and bleed easily when touched.
Squamous is another type of skin cancer that may affect people. It normally appears as a hard reddish bump or scaly patch on the lips. It may cause the skin on the lips to grow thick.
The other type of cancer that may affect people is melanoma. It may develop as a mole which frequently changes shape and color. Sometimes, it appears as a bruise on the foot and does not heal even after a long period of time.