Transient Global Amnesia

  • Affects patients between 40 and 80.
  • Attack must be witnessed.
  • Acute onset of anterograde amnesia must be present.
  • Associated with repetitive questioning.
  • No alteration in consciousness must be present. They may be disoriented in time and place.
  • No cognitive impairment other than amnesia must be present.
  • No loss of personal identity must be present.
  • No focal neurology or epileptic features must be present.
  • No recent history of head trauma or seizures must be present.
  • Attack must resolve within 24 h.
  • Other causes of amnesia must be excluded
  • Attacks are often precipitated by a Valsalva manoeuver or physical activity including swimming, immersion in cold water, intercourse, acute pain, cerebral angiography, coughing, straining to defecate, heavy lifting, sawing and pumping and  psychological stressors.

 

Reference

Transient Global Amnesia
Owen, D., Paranandi, B., Sivakumar, R., & Seevaratnam, M. (2007). Classical diseases revisited: transient global amnesia. Postgraduate medical journal, 83(978), 236-239.