T61.781

Clinical Causes: Consumption of shellfish contaminated with marine toxins such as saxitoxin, brevetoxin, or domoic acid. Harvesting shellfish from areas with harmful algal blooms ('red tides'), which produce toxins accumulating in shellfish. Eating shellfish during certain seasons when toxin levels are elevated in the water. Lack of adequate shellfish testing and regulation in some regions. Accidental ingestion of improperly prepared or stored shellfish that may harbor toxins.

Key Symptoms: Nausea and vomiting Diarrhea and abdominal pain Dizziness or feeling lightheaded Numbness or tingling sensations around the mouth, face, or extremities Weakness or muscle paralysis in severe cases Breathing difficulties or respiratory distress Confusion or altered mental state Seizures in extreme cases

Diagnosis Path: Diagnosis typically involves a detailed history of recent seafood consumption and symptom presentation. Healthcare professionals might perform physical examinations and conduct laboratory tests, including toxin assays on blood or urine samples. Identifying the specific shellfish involved and its harvesting location can assist in confirming the diagnosis. Sometimes, testing of shellfish samples from the suspected area is performed to detect harmful toxins. Medical providers will also rule out other conditions with similar symptoms, such as food poisoning caused by bacteria or viruses.

Treatment Protocols: Management of shellfish poisoning generally focuses on supportive care. This includes maintaining hydration, managing nausea and vomiting, and ensuring breathing and circulation are stable. In cases with severe neurological symptoms or paralysis, hospitalization might be necessary, and patients could require respiratory support. Activated charcoal may be used in some instances to absorb toxins if administered early. There are no specific antidotes for shellfish toxins, making symptom management crucial. Prevention strategies emphasize sourcing shellfish from reputable suppliers, avoiding shellfish during peak threat seasons, and adhering to local advisories and testing results.