May be too presumptuous, however a diarrhea of a recurrent nature, mostly suggestive of FAT MALABSORPTION with a clinical picture of nervous system involvement in form of lost DTR's may be abetalipoproteinemia. HOWEVER most abetalipoproteinemia present more with ATAXIA rather than weakness. Hence would be a need of thorough examination esp. CNS. Also, this diarhoea can be b'coz of Giardiasis.And can be thought from that angle too.Botulism is unlikely(a cause of Flaccid paralysis) as it occurs more with CONSTIPATION than diarrhoea.GBS is unlikely as no h/s/o progression of weakness is given. A little more details will have to be awaited.
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