Sanitation Certification Practice Test

What is a common symptom of shellfish poisoning caused by saxitoxin?

1. Fever

2. Paralysis

3. Headache

4. Rash

The correct answer is: Paralysis

Saxitoxin is a potent neurotoxin produced by certain types of marine algae, and it is responsible for a particular type of shellfish poisoning known as paralytic shellfish poisoning (PSP). A common symptom of saxitoxin poisoning is paralysis, which occurs because the toxin interferes with nerve transmission. This can lead to symptoms ranging from tingling and numbness to muscle weakness and respiratory failure. The onset of paralysis can happen quickly after ingesting contaminated shellfish, making it critical for individuals to recognize this severe symptom. In cases of saxitoxin poisoning, immediate medical attention is necessary due to the potential life-threatening nature of the paralysis. Other symptoms, while they may occur with different types of foodborne illnesses or shellfish poisoning, are not characteristic of saxitoxin. Fever and rash are more commonly associated with bacterial or allergic reactions, while headache can be a general symptom of various conditions and is not specific to saxitoxin exposure. Understanding that paralysis is the hallmark symptom of saxitoxin poisoning helps in recognizing the severity of the situation and the need for prompt treatment.