Seborrheic keratosis is a benign skin lesion that is it is not dangerous from a cancerous point of view. Regarding the cause it is related to hereditary predisposition.

Usually it manifests after the age of 40-50 and mainly to people who have been exposed to intense sun light.

Regarding pathology it is caused by the accumulation of keratin cells on the surface of the skin resulting in the creation of clear bordered papules or plaques.

Seborrheic keratosis has usually an oval shape with smooth tip and the color ranges from brownish or gray to black. It can be flat but usually protrudes from the skin a few millimeters and sometimes looks like a “stepped on raisin”.

In many cases it grows even a few centimeters both in length and in width.
Usually they have oily texture and have hyperkeratotic spicules and they become rough and can be rubbed easily.

Sometimes through friction with the clothes or after scrapping , parts of it fall of but because the roots still stand they grow back quickly.

Seborrheic keratosis manifests on hairy bodyparts with increased oiliness.

Most often it is found on hair of the scalp, on cheeks, on the forehead, on the shoulders, the back, chest and abdomen and less often on the upper and lower limbs.