Uhhh, can one get, and/or, take shots or proper medications for this "condition"!?
My Medical Faculty of New Zulland Home Dictionary describes as:

"Recognized by the victim lying supine and breathless, occasionally lifeless. Often near a waterway. Sometimes tongue is protruding. Appears exhausted, or deceased. May even seem to be smiling."

Cures include leaving the victim for an hour or so to recover; and occasionally a medicinal tonic; or the sound of a large 'splash' in the nearby stream will induce a spontaneous reaction.