Symptoms of Lewy Body Dementia

Cognitive Impairment

Unpredictable changes in your concentration, attention, alertness, and wakefulness can indicate cognitive impairment. A person with LBD may be seen to stare into space for long periods of time; they may also appear drowsy or lethargic, sleep for several hours during the day despite getting enough sleep the night before. Their flow of ideas and thoughts may be disorganized, unclear, or illogical at times — and they will not notice. There are periods of lucidity, or days when they seem better — but then they can get much worse the next day. These sorts of cognitive fluctuations are common in LBD and help differentiate it from Alzheimer’s.