Signs and symptoms of foodborne botulism include: 1  Difficulty swallowing or speaking. 2  Dry mouth. 3  Facial weakness on both sides of the face.  Blurred or double 1  vision. Drooping eyelids.  Trouble 1  breathing. Nausea, vomiting and abdominal cramps.  Paralysis.
DOH 332-058 October 2013 Paralytic Shellfish Poisoning (âred tideâ) What is paralytic shellfish poisoning? Paralytic shellfish poisoning (PSP) is a serious illness caused by eating shellfish contaminated with algae that contains a toxin harmful to humans.OH 332-058 October 2013 Paralytic Shellfish Poisoning (âred tideâ) What is paralytic shellfish poisoning? Paralytic shellfish poisoning (PSP) is a serious illness caused by eating shellfish contaminated with algae that contains a toxin harmful to humans.
Examples of these include moray eels, sea bass, piranhas and sharks. Shellfish are found in freshwater as well as sea water and include shrimps, prawns, oysters, cockles, clams and mussels.They are also known as âfilter feeding molluscsâ which means that they use a filter process as they feed upon algae and plankton within the surrounding water.n this case, the shellfish contain a type of toxin called âbrevetoxinsâwhich cause symptoms very similar to those of paralytic poisoning or ciguatera poisoning. Symptoms of neurotoxic poisoning include: 1  Numbness/tingling in the mouth, arms and legs.