Mild cognitive impairment (MCI) means more memory trouble than other people your age have. People with MCI can still care for themselves and do daily tasks. Common signs include losing things often and forgetting appointments. Finding the right word can also be harder. Other things can cause memory trouble too, like certain medicines. Diseases that affect blood vessels in the brain can also cause it. Some of these other causes can be managed or even reversed. A doctor can test your thinking, memory, and language skills. You may be sent to a specialist for more testing. MCI may be an early sign of Alzheimer's disease. This does not mean MCI always leads to Alzheimer's disease. Your care team can check your memory for changes over time. Right now, there is no proven drug treatment for MCI. Alzheimer's disease is the most common form of dementia in older people. Dementia is a brain disorder that seriously affects thinking and memory. Alzheimer's begins slowly and is not a normal part of aging. It first affects the parts of the brain for thought, memory, and language. Its symptoms get worse over time. It is normal to forget small things once in a while. Talk with your care team if your forgetfulness worries you.