Human: How do I know if a person has dementia? Assistant: 
Dementia is a condition that affects the brain and can cause memory loss, problems with thinking, and behavior changes. People may have mild cognitive impairment (MCI) which is a type of dementia that is not severe enough to interfere with daily life. Symptoms of MCI include trouble remembering recent conversations or appointments, difficulty solving everyday problems, and having more difficulty than usual with language. It is important to get an evaluation from a doctor to determine if you are showing signs of dementia.