Neurotoxic shellfish poisoning

Neurotoxic shellfish poisoning (NSP) is a condition caused by eating shellfish contaminated with a toxin produced by certain algae, mainly Karenia brevis. When shellfish like mussels or clams filter-feed in contaminated waters, they accumulate the toxin. Consuming these contaminated shellfish can lead to neurological symptoms such as tingling, numbness, dizziness, and coordination problems, often appearing quickly after eating. NSP is typically temporary but can be severe, and avoiding harvest areas during algal blooms reduces risk. It’s a reminder of the importance of monitoring shellfish safety in affected regions.