Impaired ability to comprehend and/or produce speech

Modest decline in cognitive impairment over time; also called MCI

derived from Greek roots meaning "without knowledge"

Inability to recognize objects despite an intact sensory system

States of extreme mental confusion interfering with concentration and ability to speak coherently

derived from the Latin roots "de" meaning from, and "lira", meaning line or furrow

Impaired ability to perform purposeful movements despite the absence of any defect in motor functioning

Profound deterioration of mental functioning

characterized by symptoms such as body tremors, agitation, confusion, frightening hallucinations, such as bugs crawling on the wall or skin

Deficits in planning, organizing, or sequencing activities or engaging in abstract thinking

Most common form of Major Neurocognitive Disorder

derives from the Greek "parienai meaning relaxation"

Formerly known as mental retardation