Seborrheic keratosis is one of the most common noncancerous skin growths in older adults. Seborrheic keratoses are normally painless and require no treatment. You may decide, however, to have them removed if they become irritated by clothing or for cosmetic reasons.
case reports are approximately respondents had at least one seborrhoeic keratoses, with no significant difference between the sexes. There was an increase in prevalence with age 25 to 30 years. The size of the seborrhoeic keratoses also increased with age. A total of 87.4% of seborrhoeic keratoses were found on the trunk and 55.3% on the limbs, head, and neck. There was no correlation between seborrhoeic keratoses and any particular hair and eye color or skin type.
Seborrhoeic keratoses are extremely common. It has been estimated that over 90% of adults over the age of 60 years have one or more of them. They occur in males and females of all races, typically beginning to erupt in the 30s or 40s. They are uncommon under the age of 20 years.