Autophagia (eating one's own body) is not classified as a mental disorder or a symptom of a mental disorder in the Diagnostic and Statistical Manual of Mental Disorders (DSM), the diagnostic manual used in the United States.
Autophagia occurs when one is compelled to inflict pain upon oneself by biting and/or devouring portions of one's body. It is sometimes seen with schizophrenia,[1] psychosis and Lesch–Nyhan syndrome.[2]