Early symptoms of skin cancer 1. Crusting If the skin crusts for no reason, especially if the crusts do not disappear for a long time, you should be vigilant, this is also an early symptom of skin cancer, especially in areas exposed to sunlight for a long time. The American Institute for Cancer Research reminds us to look in the mirror more often and try to examine the skin in a well-lit place, especially the soles of the feet, underneath the nails and hair-covered areas, which are usually neglected. If there are moles with rapid changes, protrusions, irregular edges and ulcers that do not heal for a long time, it is recommended to seek medical examination. 3. Unexplained growths Attention should be paid to areas exposed to sunlight, such as the head, neck, back of the hands, chest and back, if there are raised growths that do not disappear for a long time. The acne that does not disappear for a long time should also be noted as an early symptom of skin cancer. 4.Warts and moles change color and become brown Skin warts cancer is a kind of skin cancer, which is a low grade malignant tumor. The early stage of warts or moles cancer will have certain clinical manifestations. In the color, usually will show black, brown, blue and other colors mixed uneven; in the shape, the edge of the wart mole will show jagged jagged changes, and its surface is usually not smooth, will become rough and scaly, often protrude from the skin surface, sometimes there will be blood or ooze. The skin around the lesion usually appears edematous or loses its original luster, and the skin is often itchy, burning, or painful to the touch.