Mental or Behavioral Dysfunction
apraxia
a·prax·i·a [ uh-prak-see-uh, ey-prak- ]
Subclass of:
Psychomotor Disorders
Etymology:
Greek a = not + praxis = a doing
Hence unable to perform purposeful movements.
Hence unable to perform purposeful movements.
Definitions related to apraxias:
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A brain disorder in which a person cannot perform certain actions, such as combing hair, picking up a pencil, or speaking, even though they want to and have the physical ability to do so.Harvard Dictionary of Health TermsHarvard Medical Publishing, 2011
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A defect in the understanding of complex motor commands and in the execution of certain learned movements, i.e., deficits in the cognitive components of learned movements.Human Phenotype Ontology (HPO)The Human Phenotype Ontology Project, 2021
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Inability to perform a voluntary purposeful motor activity; cannot be explained by paralysis or other motor or sensory impairment. In constructional apraxia, a patient cannot draw two- or three-dimensional forms.Sadock's Comprehensive Glossary of Psychiatry and PsychologyBJ Sadock Titles Press, 2012
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Loss of ability to perform familiar, purposeful movements in the absence of paralysis or other neural sensorimotor impairment.CRISP ThesaurusNational Institutes of Health, 2006
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A group of cognitive disorders characterized by the inability to perform previously learned skills that cannot be attributed to deficits of motor or sensory function. The two major subtypes of this condition are ideomotor and ideational apraxia, which refers to loss of the ability to mentally formulate the processes involved with performing an action. For example, dressing apraxia may result from an inability to mentally formulate the act of placing clothes on the body. Apraxias are generally associated with lesions of the dominant PARIETAL LOBE and supramarginal gyrus. (From Adams et al., Principles of Neurology, 6th ed, pp56-7)NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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Apraxia is inability to execute purposeful, previously learned motor tasks, despite physical ability and willingness, as a result of brain damage. Diagnosis is clinical, often including neuropsychologic testing, with brain imaging (eg, CT, MRI) to identify cause. Prognosis depends on the cause and extent of damage and patient age. There...Merck & Co., Inc., 2020
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Apraxia is a neurological disorder characterized by the inability to perform tasks or movements, despite having the desire and physical ability to perform them. It is caused by damage to the brain, especially the parietal lobe, and can arise from many diseases, tumors, a stroke, or traumatic brain injury. In some cases it is present from...National Center for Advancing Translational Sciences
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Apraxia, the inability to carry out useful or skilled acts while motor power and mental capacity remain intact. Apraxia is usually caused by damage to specific areas of the cerebrum. Kinetic, or motor, apraxia affects the upper extremities so that the individual cannot carry out fine motor acts...Encyclopedia Britannica, Inc., 2020
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