Neurotoxic shellfish poisoning
Neurotoxic shellfish poisoning (NSP) is caused by the consumption of brevetoxins, which are marine toxins produced by the dinoflagellate Karenia brevis (among several others). These toxins can produce a series of gastrointestinal and neurological effects.
Source: Wikipedia — Neurotoxic shellfish poisoning (CC BY-SA 4.0)