T61.01

Clinical Causes: Consumption of fish contaminated with ciguatoxins, especially species such as barracuda, grouper, amberjack, and snapper. Eating reef fish caught in tropical or subtropical regions where toxin-producing algae thrive. Ingestion of fish that have accumulated toxins in their flesh from algae in the food chain, particularly in areas with algae blooms. Presence of ciguatoxins in the marine environment due to warming waters and ecological changes that promote algae growth.

Key Symptoms: Nausea and vomiting Diarrhea Abdominal pain and cramping Aching muscles and joints Vertical and horizontal numbness or tingling sensations on the skin Itching or a metallic taste in the mouth Dizziness and headache Swallowing difficulty or a sensation of throat tightness In some cases, cardiovascular symptoms such as a slow heart rate or low blood pressure

Diagnosis Path: Diagnosis typically relies on the patient’s recent dietary history, specifically the consumption of reef fish in endemic areas, combined with the characteristic symptoms. Healthcare providers may perform physical examinations and consider laboratory tests to rule out other conditions. Confirmation of ciguatera poisoning often involves assessing exposure history, as direct testing for the toxin in humans is limited. Identification of contaminated fish with laboratory analysis can support diagnosis.

Treatment Protocols: There is no specific antidote for ciguatera poisoning. Treatment usually focuses on symptom relief and supportive care. This may include keeping the patient hydrated and managing gastrointestinal symptoms with anti-nausea medications. Some patients find relief with medications that target neurological symptoms, such as antihistamines or antidepressants. In severe cases, hospitalization might be necessary to monitor cardiovascular status. Importantly, patients are advised to avoid alcohol, caffeine, and certain fatty foods during recovery, as these can aggravate symptoms.