What are the clinical signs of ciguatera toxin in people?

• A. Gastrointestinal illness acutely (3-5 hrs) and Neuro signs 12-18 hrs may persist for months with long-term disability possible
• B. Gastrointestinal illness only
• C. Respiratory symptoms first, then rash
• D. No symptoms in most cases

Answer: (A)

Ciguatera toxin poisoning typically follows a pattern of rapid gastrointestinal upset after ingestion of contaminated fish, then neurological symptoms that appear within about a day. The description noting acute GI symptoms within a few hours (often 3–5 hours) and neurological signs arising around 12–18 hours, with the possibility of these neuro symptoms lasting for months and causing long-term disability, matches the usual clinical course. Patients may experience paresthesias, dysesthesias, sensory disturbances (including temperature sensation reversals), dizziness, and weakness, which can persist for weeks to months in some cases.

Other patterns don’t fit: having gastrointestinal symptoms alone omits the neuro phase; respiratory symptoms first followed by a rash are not typical features of ciguatera; and no symptoms in most cases is incorrect because most people do develop symptoms after exposure.