Teeth grinding (bruxism) is involuntary clenching, grinding and gnashing of the teeth that usually happens during sleep. Causes can include stress, concentration and use of illegal drugs. Treatments include bite splints (to be worn at night), repair of tooth damage, and stress management therapy.

Body-focused repetitive behaviors (BFRBs) include any repetitive self-grooming behavior that involves biting, pulling, picking, or scraping one's own hair, skin, lips, cheeks, or nails that can lead to physical damage to the body and have been met with multiple attempts to stop or decrease the behavior.

Facial blushing is an involuntary reddening of the face due to embarrassment or stress. The terms blushing and flushing mean the same thing, although flushing tends to be used for more severe cases (known as idiopathic cranio-facial erythema).