T61.0

Clinical Causes: Eating reef fish contaminated with ciguatoxins, especially large, predatory species such as barracuda, grouper, snapper, and amberjack. Consumption of improperly prepared or undercooked fish that contains high levels of toxins. Ciguatoxin accumulation in fish is related to environmental factors such as coral reef health, water temperature, and algae proliferation.

Key Symptoms: Gastrointestinal issues including nausea, vomiting, diarrhea, and abdominal pain. Neurological symptoms such as tingling or numbness around the lips, tongue, fingers, and toes. A sensation of temperature reversal, where hot items feel cold and vice versa. Muscle weakness, fatigue, and dizziness. Cardiovascular symptoms such as irregular heartbeat or low blood pressure in some cases. Persistent sensations of pruritus or skin burning.

Diagnosis Path: Diagnosis primarily involves reviewing recent dietary history, especially recent intake of reef fish known for high ciguatoxin levels. Healthcare providers may perform physical examinations and order laboratory tests to rule out other illnesses with similar symptoms. No specific laboratory test can definitively confirm ciguatera poisoning; however, toxin levels can sometimes be detected in fish tissue. The diagnosis is based on clinical presentation and exposure history.

Treatment Protocols: There is no specific antidote for ciguatera poisoning. Management focuses on supportive care, including hydration to manage gastrointestinal symptoms and medications to alleviate neurological discomfort. Some cases may benefit from medications such as antihistamines, anticonvulsants, or triclocarban in severe symptoms. Symptom duration varies, but most individuals recover fully within weeks. Patients are advised to avoid alcohol, caffeine, and certain medications that might exacerbate neurological symptoms until fully recovered.