Because friction generates heat, extreme cases of chafing may result in genuine thermal burning of the outer layers of skin.

Common places at which skin-to-skin chafing can occur are between the thighs and under the armpits.

Friction burns are very common with clothing such as trousers on the knees caused by playing sport or sliding on wooden surfaces.

Less dangerous friction burns can occur frequently on sensitive skin surfaces such as the genitals, such as during sexual intercourse or masturbation.

The risks of a friction burn include infection and temporary or permanent scarring.