A seborrhoeic keratosis is a harmless warty spot that appears during adult life as a common sign of skin aging. Some people have hundreds of them. Seborrhoeic keratosis is also called SK, basal cell papilloma, senile wart, brown wart or barnacle.
Although they are a common finding in younger patients found in 12% of 15-year-olds to 25-year-olds making the term The average age of patients suffering from lesions with and without associated malignancy was 57 and 54 years,the approximate rate is highest with a prevalence of around 50% and the rate is estimated to be between 18% and 32% Seborrheic keratoseson exposed areas were more often flat and more than 3 mm in diameter than those on the non-exposed areas.
As time goes by, seborrhoeic keratoses become more numerous.The cause of seborrhoeic keratoses is not known. The name is misleading, because they are not limited to a seborrhoeic distribution (scalp, mid-face, chest, and upper back) as in seborrhoeic are they formed from sebaceous glands, as is the case with sebaceous hyperplasia. Seborrhoeic keratoses are considered degenerative in nature, appearing as part of the skin aging process.