Answer:

Skin cancer is the abnormal growth of skin cells. As old skin cells die and are shed, new cells form to replace them. If this process is disrupted, such as by exposure to ultraviolet (UV) radiation from the sun, skin cells can grow too quickly, leading to cancer.

The three main types of skin cancer are basal cell carcinoma, squamous cell carcinoma, and melanoma. In the early stages (1-2), the disease can often be cured.

Skin cancer can appear in areas frequently exposed to sunlight, such as the neck, ears, face, scalp, and eyelids. However, it can also occur in areas less exposed to sunlight, including the fingernails, palms, soles of the feet, inner ears, eyelids, and lips.

Soles of the feet: Skin cancer in this location is also known as plantar melanoma. It often begins as a flat, dark spot that's distinct from the surrounding skin, sometimes appearing red or orange.

Palms of the hands: Similar to the soles of the feet, this area has minimal sun exposure but can still develop skin cancer or other malignant growths. Often, individuals don't notice it until the disease has progressed significantly, presenting as ulcers or metastatic tumors.

Doctor Vinh consults with a patient. Photo illustration: Tam Anh General Hospital

Doctor Vinh consults with a patient. Photo illustration: Tam Anh General Hospital

Under the fingernails: Skin cancer is less common in this area. If a persistent, unexplained dark streak appears under a fingernail, seek medical attention for diagnosis and early treatment.

Your symptoms are not clear, so a precise diagnosis cannot be provided. You should consult an oncologist or a head and neck specialist for a thorough examination to determine the cause.

To prevent skin cancer, minimize sun exposure, as UV radiation damages skin over time and can lead to skin cancer. When outdoors, wear a wide-brimmed hat to protect your face and ears, long-sleeved shirts and pants, and sunglasses. Regularly examine your skin, particularly the scalp, ears, palms, soles of the feet, and genital area, for any spots, changes in color, or changes in shape.

Dr. Le Ngoc Vinh

Department of Breast and Head and Neck Surgery

Tam Anh General Hospital, TP HCM