Symptoms of Alzheimer's Disease include memory lapses, confusion or disorientation, challenges with word formation when speaking and writing, and changes in personality and behavior, according to Mayo Clinic. Patients may also have difficulty concentrating, which can lead to lapses in memory when managing finances, recognizing faces or numbers and completing daily tasks such as grooming.
Alzheimer's disease causes brain cells to deteriorate, leading to the rapid onset of dementia, according to the Alzheimer's Association. Signs of dementia appear in distinct stages, and on average, Alzheimer's disease leads to death about eight years after the symptoms become visible. In the earliest stages, an individual may have mild memory loss and difficulty retaining new information. As the condition progresses, others may notice behavioral changes, disorientation and the tendency to confuse familiar details. An individual may eventually show signs of paranoia and severe memory loss, gradually leading to a total breakdown of intellectual reasoning, mobility and communication skills.
Memory lapses within Alzheimer's patients may cause them to ask questions without knowledge that they have already posed them, misplace possessions, and forget names of everyday objects or family members. These lapses also lead to inability to remember events, appointments or conversations, explains Mayo Clinic. People with Alzheimer's Disease experience a disruption in the brain's ability to accurately interpret events that are not familiar, which may cause them to wander off or get lost easily.
The disease also affects personality and behavior which can lead to anxiety, depression, social withdrawal and mood swings, according to Mayo Clinic. Patients with Alzheimer's Disease may also become irritable, aggressive and lose their inhibitions during memory lapses. A distrust of others is common within Alzheimer's patients, and some people experience delusions, causing them to become skeptical or paranoid. People with Alzheimer's Disease may also experience increased irritability when the condition causes changes in sleeping habits.