Loss of function

Signs of loss of function include:

  • Confusion or altered behavior, such as the inability to fully wake a person from sleep, or unusually aggressive or combative behavior.
  • Dizziness (vertigo) or loss of balance that occurs with nausea or vomiting or that prevents standing or walking.
  • Fainting (syncope) or loss of consciousness.
  • Headache that is severe and in a specific area without another apparent cause.
  • Inability to speak, difficulty speaking, or difficulty understanding speech.
  • Numbness, loss of all feeling, or inability to move (paralysis) in part or all of one side of the body, such as the face, an arm, or a leg.
  • Sudden inability to walk or stand or difficulty walking or standing (ataxia).
  • Vision problems, such as double vision or sudden dimness, blurring, or loss of vision in one or both eyes.

Last Updated: January 13, 2009

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