Blemishes that appear on the skin with growing age. The most ordinary type are brown or yellow slightly raised spots called seborrhoeic keratoses, which can occur at any site. Also familiar in elderly people are freckles, De Morgan’s spots, which are red, pinpoint blemishes on the trunk and solar keratoses (small scaly patches, often appearing in the backs of the hands).
Treatment is often unnecessary for any of these age spots, aside from solar keratoses, which can eventually progress to a form of skin cancer. Freezing the keratoses with liquid nitrogen or using a cream containing a cytotoxic drug is the common treatment. They may also be removed surgically using a local anaesthetic.