Final answer:
Seborrhoeic keratosis is a benign skin condition characterized by noncancerous growths that appear waxy and stuck-on. These are different from basal cell carcinoma and squamous cell carcinoma, which are forms of skin cancer.
Step-by-step explanation:
Seborrhoeic keratosis is a common skin condition that manifests as noncancerous growths on the skin. It is most commonly found in middle-aged and older individuals. These growths, also known as basal cell papillomas or senile warts, have a characteristic waxy, pasted-on or stuck-on look and can range in color from light tan to black. They are often round or oval-shaped, can vary in size, and may have a scaly or rough surface. Seborrhoeic keratoses are benign and do not develop into skin cancer, unlike basal cell carcinoma or squamous cell carcinoma.
Basal cell carcinoma is another skin condition that occurs in the basal cells of the epidermis and is represented by lesions on the skin that can appear pearly or waxy. On the other hand, squamous cell carcinoma forms in the squamous cells of the epidermis, presenting as a firm, red nodule, or as a flat lesion with a scaly surface. These should not be confused with seborrhoeic keratosis, which is typically harmless and does not require treatment unless it causes discomfort or cosmetic concerns.