Expand PSP

Explanation

**Step-by-Step Solution:**

1. **Identify the Acronym**: The first step is to recognize what the acronym "PSP" stands for. In this context, it refers to a specific medical condition.

2. **Define PSP**: PSP stands for "Paralytic Shellfish Poisoning." This is a condition that arises from the consumption of contaminated shellfish.

3. **Understand the Cause**: The condition is caused by eating shellfish that have been contaminated with toxins produced by certain types of algae, specifically dinoflagellate algae.

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