What should you know about schizophrenia and dementia?

Schizophrenia and dementia are different conditions, but both can affect thinking, behaviour, and daily functioning. Schizophrenia commonly involves psychosis such as hallucinations, delusions, or disorganised thinking, while dementia describes an ongoing decline in cognitive abilities that interferes with everyday life. A person with one condition is not automatically developing the other.

Memory problems, confusion, withdrawal, sleep changes, or unusual beliefs can have several explanations, including illness, medicine effects, depression, substance use, or an acute medical problem. Urinary incontinence alongside a new change in walking, alertness, or thinking should be reported promptly. A clinician considers the timeline, previous mental health, physical examination, medicines, and functional changes rather than assigning a label from one symptom.

Arrange a GP consultation when memory, reasoning, perception, or self-care is changing. Bring a current medicine list and, if possible, examples of when the change began and how it affects meals, finances, sleep, or safety. A mental health assessment may clarify hallucinations or fixed beliefs, while physical checks can look for reversible contributors. Do not stop antipsychotic or other prescribed treatment without medical guidance.

Seek emergency help for sudden confusion, a new severe headache, weakness on one side, seizure, collapse, high fever, or rapidly worsening behaviour. Immediate support is also needed when someone may harm themselves or another person, cannot care for basic needs, or is unable to take essential medicine safely. Keep the environment calm and remove immediate hazards while help is arranged.

Ask which changes suggest a cognitive disorder, psychosis, delirium, or another medical cause; what assessment is planned; and how carers can record symptoms. Ask about medicine effects, follow-up timing, crisis contacts, and ways to support consent and independence.