The greatest risk from fish allergies is anaphylaxis, a severe systemic reaction in which the body releases large amounts of histamine, causing tissues throughout the body to swell cause life-threatening breathing, cardiac, and gastrointestinal symptoms. All typeof allergy should be treated herbally. Just try to visit http://www.theallergyreliefguide.com/ , which is a famous sites that help you for knowing all details. Fish allergy is linked to an increased risk of severe asthma in adult patients.