A neurologic deficit refers to abnormal function of a body area. This altered function is due to weaker function of the brain, spinal cord, muscles, or nerves.
Reviewed By: Alireza Minagar, MD, MBA, Professor, Department of Neurology, LSU Health Sciences Center, Shreveport, LA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.