Seborrheic keratosis is a common skin growth that people usually develop after their 30's. What you may have noticed is that they start out flat and over the course of time they tend to have a raised appearance and look like a wart. Which is why seborrheic keratosis is also referred to as senile wart. Since it takes a while for it to develop, the chances of seborrheic keratosis falling off on its own are extremely rare. Even though it is a harmless skin condition but in most cases people want to get rid of it because of aesthetic reasons. Some people also experience itchiness or pain, which is considered asymptomatic.
Please note that if you want to get rid of seborrheic keratosis solely for cosmetic reasons, your insurance company may not cover it. However if you happen to have seborrheic keratosis that is itchy, painful, or bleeds; in those cases the insurance will most likely cover the removal process.