MedGen

Dementia with Lewy bodies (DLB) is a neurodegenerative disorder clinically characterized by dementia and parkinsonism, often with fluctuating cognitive function, visual hallucinations, falls, syncopal episodes, and sensitivity to neuroleptic medication. Pathologically, Lewy bodies are present in a pattern more widespread than usually observed in Parkinson disease (see PD; 168600). Alzheimer disease (AD; 104300)-associated pathology and spongiform changes may also be seen (McKeith et al., 1996; Mizutani, 2000; McKeith et al., 2005). [from OMIM]

Loss of previously present mental abilities, generally in adults. [from HPO]

A degenerative vascular disorder affecting the brain. It is caused by the blockage of the blood supply to the brain. It is manifested with decline of memory and cognitive functions. [from NCI]

Pathological conditions involving arteries in the skull, such as arteries supplying the cerebrum, the cerebellum, the brain stem, and associated structures. They include atherosclerotic, congenital, traumatic, infectious, inflammatory, and other pathological processes. [from MONDO]

This term describes abnormality of the white matter of the cerebrum resulting from damage to the myelin sheaths of nerve cells. [from HPO]

Vascular diseases characterized by thickening and hardening of the walls of arteries inside the skull. There are three subtypes: (1) atherosclerosis with fatty deposits in the arterial intima; (2) Monckeberg's sclerosis with calcium deposits in the media and (3) arteriolosclerosis involving the small caliber arteries. Clinical signs include headache; confusion; transient blindness (amaurosis fugax); speech impairment; and hemiparesis. [from MONDO]