delusional disorder
A psychiatric diagnosis characterized by persistent delusions without other prominent psychotic symptoms. Used in clinical contexts.
Patients with delusional disorder may firmly believe things that are not possible in reality.
統合失調症 (schizophrenia) involves a broader range of symptoms including hallucinations and disorganized thinking, whereas 妄想病 is limited to persistent delusions.
Compound of 妄想 (delusion) and 病 (illness), directly translating the medical concept of delusional disorder.