Biting the tongue in sleep is an unserious condition until the hurt area starts bleeding. Our tongue responds to injuries by causing swelling bumps on the injured area. For more info visit: https://www.suryadentalcare.com/biting-tongue-in-sleep-causes-symptoms-and-treatment/ https://www.suryadentalcare.com/biting-tongue-in-sleep-causes-symptoms-and-treatment/