Alzheimer’s disease is an irreversible brain disease that slowly destroys memory skills, thinking skills and, eventually, the ability to carry out daily activities, leading to the need for full-time care. Dementia is the general term for a group of brain disorders that cause problems with thinking, memory and behavior. Alzheimer’s disease is the most common type. Symptoms vary from person to person, but all people with Alzheimer’s disease have problems with memory loss, disorientation and thinking ability. People with Alzheimer’s disease may have trouble finding the right words to use, recognizing objects (such as a pencil), recognizing family and friends, and may become frustrated, irritable, and agitated. As the disease gets worse over time, physical problems may include loss of strength and balance, and diminishing bladder and bowel control. As more and more of the brain is affected, areas that control basic life functions, like swallowing and breathing, become irreversibly damaged, resulting eventually in death.