- Skin conditions can result from seafood allergies. The skin can develop hives and rashes that become itchy and irritated.
- Seafood allergies can upset the stomach, and may cause gas, bloating, heartburn and nausea.
- Shortness of breath, difficulty breathing, coughing and wheezing are signs of a seafood allergy.
- The digestive system may be affected by seafood allergies and diarrhea may occur.
- A runny nose and nasal congestion are signs of a seafood allergy.
- Anaphylaxis may occur with a seafood allergy. This is when two or more symptoms occur simultaneously.








