-phrenia

Also ‑phrenic.

Mental disorder.

Greek phrēn, mind.

Examples include schizophrenia (Greek skhizein, to split), a mental disorder involving a breakdown in the relation between thought, emotion, and behaviour; hebephrenia (Greek hēbē, youthful beauty, because it was originally associated with behaviour in puberty), a form of chronic schizophrenia involving disordered thought, inappropriate emotions, hallucinations, and bizarre behaviour; paraphrenia (Greek para, amiss or irregular), a form of mental illness of a paranoid or schizophrenic type. Forms in ‑phrenic are either nouns indicating a person with the disorder or adjectives relating to it: schizophrenic, hebephrenic.