8. Herring Worm Disease
If you experience abdominal pain after eating sushi, it might be a herring worm infestation. In the ocean, the stool of infected sea mammals is eaten by small fishes such as shrimp, crabs, etc. Then the fishes which are used to prepare sushi to eat those little fishes. The uncooked fish then transfers the herring worms into our system.
Once inside the human body, the larvae invade the gastrointestinal tract causing abdominal pain, vomiting, diarrhea. The infection can also cause allergic reactions with itching and rashes, and infrequently, anaphylaxis.