<prompt> Metabolites of tryptophan can give rise toDiarrhoeaVasoconstrictionFlushingAll of these  <response>: Serotonin a metabolite of tryptophan causes vasoconstriction, flushing, chronic diarrhea and respiratory distress due to bronchospasm.Albinism is a defect in the metabolism of tyrosine due to deficiency of tyrosinase. 