How a stay in hospital can tip you over the edge: Experts reveal noisy wards can lead to terrifying hallucinations and even long-term harm. Recognizing the symptoms means patients receive the care they need and can make the difference between going home or a prolonged hospital stay and distressing loss of independence. However, surveys show low awareness of the condition among medical professionals and the public. For older people, a change in medication could trigger delirium. It can also be caused by a major hit to the body's repair mechanisms, such as a life-threatening infection.

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