Sushi Lovers: allergies and intolerances?

Mmmmm Sushi.

So fellow Sushi Lovers.

Do any of you have allergies or intolerances that limit the types of sushi you can enjoy. Or cause you to have to use extra caution when ordering. I feel so alone!

Items I have issues with are crab, lobster, shrimp and prawn... Not certain if it is a true allergy (thankfully I don't get a severe reaction - just unpleasant). Unsure if there are other items I should also avoid too.

How does a Sushi Lover navigate such a thing?