Skin cancer refers to when abnormal skin cells undergo uncontrolled cell growth, often due to long-term sun exposure or ultraviolet radiation. It predominantly appears in areas frequently exposed to the sun, such as the eyelids and around the eyes, face, head, neck, and ears.
There are two main categories of skin cancer: non-melanoma and melanoma. Non-melanoma skin cancer includes basal cell carcinoma and squamous cell carcinoma, which are the most common types. Melanoma is a more aggressive and potentially deadly form of skin cancer. It is less common than non-melanoma skin cancers but is more likely to spread to other parts of the body if not detected early.
Symptoms of skin cancer can vary, but they may include the development of new growths, lesions, or moles, changes in the colour or shape of existing moles, or the presence of raised or irregular sores that do not heal. Certain risk factors, such as fair skin, a history of sunburns, a genetic predisposition to skin cancer, or a weakened immune system, can increase the likelihood of developing skin cancer.