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Retrospective of Concussive Convulsions in Elite Australian Rules & Rugby League Footballers BMJ 314:171-174, 1581997., McCrory,P.R.,et al, 1997 See this aricle in Pubmed Article Abstract Twenty-two cases of concussive convulsions were identified with four events documented on television videotape.Convulsions began within 2 seconds of impact and comprised an initial periods of tonic stiffening followed by myoclonic jerks of all limbs lasting up to 150 seconds.Some asymmetry in the convulsive manifestations was common and recovery of consciousness was rapid.No structural or permanent brain injury was present on clinical assessment,neuropsychological testing or neuroimaging studies.All players return to elite competition within two weeks of the incident.Epilepsy did not develop in any player over a mean(range)followup of 3.5(1-13)years.These concussive or impact convulsions are probably a nonepileptic phenomenon,somewhat akin to convulsive syncope.The mechanism may be a transient traumatic functional decerebration.In concussive convulsions,the outcome is universally good,antiepileptic treatment is not indicated and prolonged absence from sport is unwarranted.

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