Question: What is (are) Alzheimer's Disease ?
Answer: Alzheimer's disease has three stages: early (also called mild), middle (moderate), and late (severe). A person in the early stage of Alzheimers may - find it hard to remember things - ask the same questions over and over - get lost in familiar places - lose things or put them in odd places - have trouble handling money and paying bills - take longer than normal to finish daily tasks. find it hard to remember things ask the same questions over and over get lost in familiar places lose things or put them in odd places have trouble handling money and paying bills take longer than normal to finish daily tasks. As Alzheimers disease progresses to the middle stage, memory loss and confusion grow worse, and people may have problems recognizing family and friends. Other symptoms are this stage include - difficulty learning new things and coping with new situations - trouble carrying out tasks that involve multiple steps, like getting dressed - impulsive behavior - forgetting the names of common things - hallucinations, delusions, or paranoia - wandering away from home. difficulty learning new things and coping with new situations trouble carrying out tasks that involve multiple steps, like getting dressed impulsive behavior forgetting the names of common things hallucinations, delusions, or paranoia wandering away from home. As Alzheimers disease becomes more severe, people lose the ability to communicate. They may sleep more, lose weight, and have trouble swallowing. Often they are incontinentthey cannot control their bladder and/or bowels. Eventually, they need total care.
Source: NIHSeniorHealth

Question: what research (or clinical trials) is being done for Alzheimer's Disease ?
Answer: Translational research grows out of basic research. It creates new medicines, devices, or behavioral interventions aimed at preventing, diagnosing, or treating a disease. An important goal of Alzheimers translational research is to increase the number and variety of potential new medicines and other interventions that are approved for testing in humans. Scientists also examine medicines approved to treat other diseases to see they might be effective in people with Alzheimers. The most promising interventions are tested in test-tube and animal studies to make sure they are safe and effective. Currently, a number of different substances are under development that may one day be used to treat the symptoms of Alzheimers disease or mild cognitive impairment. See the latest Alzheimers Disease Progress Report to read about results of NIA-supported Alzheimers research.
Source: NIHSeniorHealth