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Dermatophagia is a type of pica and a body-focused repetitive behavior that involves gnawing or biting one's own skin, usually at the fingers. It can be conscious or unconscious, and it may be related to other disorders such as OCD or autism.
Autophagia is the practice of biting or consuming one's own body, such as nails, hair or fingers. It is a sub category of self-injurious behavior and may be related to mental disorders, impulse control or pain seeking.
Nail biting is an oral habit of biting one's fingernails, which can be a sign of anxiety, stress or other disorders. It can lead to infections, dental problems, social stigma and low self-esteem. Learn about the signs, symptoms, related disorders and treatment options for nail biting.
Excoriation disorder, also known as dermatillomania or skin picking disorder, is a mental disorder that causes repeated picking at one's own skin. It can be triggered by stress, anxiety, or perceived skin defects, and can lead to physical damage, infection, and psychological distress.
Biting the fingers and lips is a definitive feature of Lesch–Nyhan syndrome; in other syndromes associated with self-injury, the behaviors usually consist of head banging and nonspecific self-mutilation, but not biting of the cheeks, lips and fingers.
Apert syndrome is a genetic disorder that causes malformations of the skull, face, hands and feet. It is a type of acrocephalosyndactyly, affecting the first branchial arch, and has three types of hand deformities: spade, mitten and rosebud.
Dermatographic urticaria is a skin disorder that causes red wheals on the skin when scratched or rubbed. It is also known as dermographism, dermatographia, or skin writing. Learn about its causes, symptoms, diagnosis, and treatment.
In more severe cases, the motions may become harmful to the individual, and may involve things such as ripping, tearing, or chewing at the skin around one's fingernails, lips, or other body parts to the point of bleeding. Psychomotor agitation is typically found in various mental disorders, especially in psychotic and mood disorders.