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Definition
Underlying Cause
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Arm and Leg Weakness (unilateral) Definition
Common names:
  • Arm and Leg Weakness
  • Arm and Leg Weakness (unilateral)
  • Leg and Arm Weakness (unilateral)
  • Weakness in One Arm and One Leg
  • Weakness on One Side of the Body
A person with unilateral arm and leg weakness has muscle weakness on one side of the body. Images

Weakness can be caused by malfunction of part of the brain, spinal cord, or spinal nerves. All of these structures play a role in stimulating the muscles to move the arms and legs.

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Last Updated: Nov 19, 2008
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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