BackgroundCatatonic stupor is a potentially life-threatening condition, with key symptoms including mutism, immobility, refusal to eat, and negativism. It may be accompanied by complications such as infection, hyperthermia, and thrombosis. When patients develop concurrent severe physical illnesses, this is very likely to cause delays in diagnosis and treatment, further increasing the risk of clinical deterioration.MethodsThis article reports a 52-year-old patient with schizophrenia presenting wi