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When Alzheimer's disrupts memory, language, thinking and reasoning, these effects are referred to as "cognitive symptoms" of the disease. The term "behavioral symptoms" covers a large group of additional symptoms that occur to at least some degree in many, but by no means all, individuals with Alzheimer's -- such as irritability, anxiety or depression; sleep disturbances; agitation (physical or verbal outbursts, general emotional distress, restlessness, pacing, shredding paper or tissues, yelling); delusions (firmly held belief in things that are not real); or hallucinations (seeing, hearing or feeling things that are not there).
New Jersey Nursing Home Library , Brain Tumor Library
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