diarrheic shellfish poisoning

Diarrheic shellfish poisoning (DSP) is a type of shellfish poisoning caused by toxins produced by certain types of algae, particularly species of Dinophysis. These toxins, known as okadaic acids, accumulate in shellfish like mussels and clams when they consume the toxic algae.1

When humans eat contaminated shellfish, they can develop DSP. Symptoms typically appear within minutes to hours and include gastrointestinal distress such as diarrhea, nausea, vomiting, and abdominal pain. While generally not as severe as some other forms of shellfish poisoning, DSP can cause significant discomfort. Recovery is usually good if the individual survives the initial illness, but it is best avoided by adhering to public health advisories regarding shellfish consumption.23