<unk>  is a common feature of many of the diseases that affect the brain.<unk>  of any tissue means loss of cells. In brain tissue,<unk>  describes a loss of neurons and the connections between them.<unk> <unk> n be generalized, which means that all of the brain has shrunk; or it<unk> n be focal, affecting only a limited area of the brain and resulting in a decrease of the functions that area of the brain controls. If the<unk>  hemispheres (the two lobes of the brain that form the cerebrum) are affected, conscious thought and voluntary processes may be impaired.
Cerebral atrophy
Acrania
Moon facies
Lipodystrophy
Cerebellar hypoplasia
Coprolalia
Corticobasal degeneration
Encephalopathy