Diarrheic shellfish poisoning
Diarrheic shellfish poisoning (DSP) is one of the four recognized symptom types of shellfish poisoning, alongside paralytic shellfish poisoning, neurotoxic shellfish poisoning and amnesic shellfish poisoning. As the name suggests, it mainly manifests as diarrhea.
Source: Wikipedia — Diarrheic shellfish poisoning (CC BY-SA 4.0)