<unk>  is a motor disorder caused by damage to the brain (specifically the posterior parietal cortex or corpus callosum) which causes difficulty with motor planning to perform tasks or movements. The nature of the damage determines the disorder's severity, and the absence of sensory loss or paralysis helps to explain the level of difficulty. Children may be born with<unk> ; its cause is unknown, and symptoms are usually noticed in the early stages of development.<unk>  occurring later in life, known as acquired<unk> , is typically caused by traumatic brain injury, stroke, dementia, Alzheimer's disease, brain tumor, or other neurodegenerative disorders. There are multiple types of<unk> , categorized by the specific ability and/or body part affected. The term<unk>  comes from the Greek ἀ- a- ("without") and πρᾶξις praxis ("action").
Apraxia
Pallor
Dyslexia
Diplophonia
Agnosia
Social-emotional agnosia
Anhedonia
Musical anhedonia