Which symptom is commonly associated with skin cancer?

Change in a mole's color or size is a crucial symptom associated with skin cancer, particularly melanoma and other forms of non-melanoma skin cancers. This change can include an alteration in the hue, such as turning darker or showing variations in color, or a noticeable increase in the mole's dimension. These changes are significant warning signs that could indicate malignancy. Regular self-examination of moles is encouraged, as early detection of skin cancer greatly improves the chances of successful treatment.

Other symptoms listed, such as itching without a rash, dry skin, or excessive sweating, may have different underlying causes or are less specific indicators of skin cancer. While itching might be associated with certain skin conditions, it is not a definitive sign of skin cancer. Similarly, both dry skin and excessive sweating can be linked to a variety of issues including environmental factors or other dermatological problems, but they do not directly correlate with the risks of skin cancer. Therefore, the change in a mole's color or size stands out as a clear and focused indicator that warrants further investigation.