Redness and irritation on your Friction burn from sex can have other causes, too. Less dangerous friction burns can occur frequently on sensitive skin surfaces such as the genitals, such as during sexual intercourse or masturbation. Why Are My Balls Itchy? From worsening anxiety to making depression more likely, sugar is seriously harmful to your mental health. Because friction generates heatextreme Friction burn from sex of chafing may result in genuine burning of the outer layers of skin.