Keratosis pilaris is a very common skin condition, which looks a bit like a rash. It is usually found on the tops of the arms and looks like small red/brown spots or bumps accompanied by surrounding skin redness. The skin will also feel rough to the touch if you have keratosis pilaris.
There is a genetic link with keratosis pilaris so it tends to be inherited. The cause of the condition is an excess production of keratin, a protein which helps make the outer layer of the skin. This causes the hair follicles to become blocked with skin cells, which gives the condition its bumpy, rough appearance.
Keratosis pilaris is most commonly found on the tops and backs of the arms but you can also get it on your thighs and buttocks.
Keratosis pilaris is largely inherited and people of all ages can get it, including children. It tends to be more prevalent in those with very fair skin types and women are more likely to get the condition than men. Those with other dry skin conditions like eczema are often susceptible too.