The symptoms of anisakiasis include sudden, severe stomach pain that sometimes mimics appendicitis, often with nausea, and vomiting. The symptoms usually begin within 6 hours of eating raw or inadequately treated seafood.
Most patients improve spontaneously without specific therapy.
If necessary, the worm can be removed surgically. Prescribed medications can be effective if surgery is not needed. Second infections with anisakiasis have been reported. Thoroughly cook or freeze all seafood. Clean all fish as soon as possible after they are caught to reduce the chance that larvae might migrate into the flesh of the fish.