It's an overall term that describes a wide range of symptoms associated with a decline in memory or other thinking skills severe enough to reduce a person's ability to perform everyday activities. Alzheimer's disease accounts for 60 to 80 percent of cases. Vascular dementia, which occurs after a stroke, is the second most common dementia type. But there are many other conditions that can cause symptoms of dementia, including some that are reversible, such as thyroid problems and vitamin deficiencies.
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Customer service is the act of taking care of the customer's needs by providing and delivering professional, helpful, high quality service and assistance before, during, and after the customer's requirements are met. 1  Customer service is meeting the needs and desires of any customer. Some characteristics of good customer service include: 1  Promptness: Promises for delivery of products must be on time. 2  Politeness: Politeness is almost a lost art. 3  Professionalism: All customers should be treated professionally, which means the use of competence or skill expected of the professional.