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A 2 year old girl presents to the emergency department following an episode in which the child became pale and fainted.  Prior to the episode the child was crying which suddenly stopped. The child returned to normal within one minute. There were no unusual movements associated with this event. This child is growing and developing normally. The family history is unremarkable. Physical examination is within normal limits.

What is the most likely diagnosis for this child?

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Authors

Dr. Tara Baron

NOSM

Dr. Mary Jane Smith

Memorial University of Newfoundland

Dr. Marc Zucker

Zucker@cheo.on.ca

Reviewer

Dr. Karen Forbes