Memory loss is associated with this type of shellfish poisoning.
Algal Species (found in the Gulf of Mexico) that Cause ASP
Pseudo-nitzschiaspecies (diatom)
For example: P. multiseries and P. pseudodelicatissima (image)
Toxin
Domoic acid and its derivatives
Human Symptoms/Illness
Symptoms appear within 24 hours; memory loss can last for more than one year
Factors Affecting Degree of Toxicity
Amount of toxin ingested
Transformation of toxins
Rate of toxin elimination
Diagnosis
Consumption of seafood before sickness
Can examine food specimen
NOTE: Symptoms are more severe in the elderly and in children
Immediate Symptoms
Vomiting
Abdominal cramps
Diarrhea
Nausea
Headache
Subsequent Symptoms (within 48 hours)
Disorientation
Memory loss
Seizures
Coma
Seafood Associated with ASP
Clams
Mussels
Dungeness crabs
ASP Cases in the U.S.
Hawaii
Oregon
Washington
ASP Cases in the Gulf of Mexico
None