If you are allergic to fish oil, you have a general allergy to fish. MedlinePlus states that although most fish oil supplements do not contain fish proteins that cause an allergy, it is advisable to avoid using fish oil supplements. Breathing difficulty from a fish oil allergy may be the result of a mild to severe allergic reaction. Any difficulty breathing needs to be reported to a medical professional immediately to avoid further complications.
Fish Allergy
A fish allergy is commonly associated with a severe allergic reaction called anaphylaxis, according to the Food Allergy Initiative. Fish allergies are caused primarily by the proteins found in the flesh of the fish, but some people may also be allergic to proteins found in the bones and skin of the fish. During an allergic reaction to fish proteins, the immune system malfunctions and reacts to the proteins as if they were dangerous. The body protects itself by producing antibodies. These specific allergy-related antibodies trigger a chain-reaction of chemicals to be released in the body. The chemicals cause common allergy symptoms.
Difficulty Breathing
Histamine is one chemical that's released in soft tissue throughout the body. Histamine in the lungs causes the airways to swell, restricting your ability to breathe properly. Common symptoms form a fish allergy related to breathing difficulty include: shortness of breath, wheezing, chest tightness and coughing. Most of these symptoms will develop within minutes of taking a fish oil supplement. If you have difficulty breathing, discontinue use of the supplement and call your doctor.
Anaphylaxis Consideration
The inability to breathe may be a sign of anaphylaxis. This severe allergic reaction can lead to death if not properly treated. Other symptoms of anaphylaxis include: facial swelling, lip swelling, mouth swelling, hives, a rapid but faint heart rate, dizziness and lightheadedness. If you have a known fish allergy, ask your doctor about a prescription for an epinephrine pen. This medication, injected at the first signs of anaphylactic shock can prevent further complications. If you don't have epinephrine, seek emergency medical care immediately.
Other Symptoms
Other common symptoms from a fish oil allergic reaction include: nasal congestions, digestive system complications and skin rashes. You may develop a runny nose, sneezing and sinus pressure. The digestive system can lead to nausea, vomiting and diarrhea. Your skin can develop general itchiness, hives or eczema. All skin rashes need to be assessed by a doctor.
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