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Crab Allergy Symptoms

Food allergies are common. Allergies to shellfish like crab are probably one of the more common food allergies out there. Someone who is allergic to shellfish may or may not be allergic to other types of seafood. However, most of the time, someone who is allergic to crab will be allergic to other types of shellfish, like lobster. While an allergic reaction to crab can be severe, it's not necessarily the case. Consulting a doctor can help determine if someone is having an allergic reaction or if the symptoms pertain to something else.

  1. Skin Rash

    • A skin rash is a common symptom of a crab allergy. The rash can appear anywhere on the skin and appear in various ways. A skin rash doesn't have to be a bad one. It could appear pink in color and itch. However, with a food allergy, it's common to have a severe rash, hives and even swelling on the skin.

    Breathing Difficulties

    • Someone with a crab allergy could experience difficulty breathing. This is a more severe symptom and a physician should be contacted immediately. With an allergy, shortness of breath can quickly become a major issue, as it is probably caused by swelling that's blocking the person's windpipe.

    Anaphylaxis

    • Anaphylaxis is an entire body reaction to an allergy. It can cause hives and swelling. The swelling is usually severe and in the eyes, face and throat. It can quickly block a person's airway, making it hard to breathe. Anaphylactic shock is possible with an allergy, but is most common in people who have been stung by an insect or in people who have food allergies. Without immediate treatment, it can effect the heart and even lead to death.

    Dizziness

    • Dizziness or feeling lightheaded can be common with food allergies. It usually occurs when an allergic reaction has an effect on the nose or ears. It can occur in as few as five minutes after eating, or hours later depending on the severity of the food allergy. A physician should be consulted if dizziness is suspected to be the result of a crab allergy.

    Vomiting or Diarrhea

    • Vomiting and diarrhea can occur with any food allergy. It's simply the body trying to remove what is toxic to it. However, if vomiting and diarrhea continues, the person can easily become dehydrated. It's important to make sure someone allergic to crab stays properly hydrated and seeks medical attention.

    Tightness of the Chest

    • When someone consumes a food to which they are allergic, his chest may begin to feel tight. This is usually accompanied by other symptoms, and the person could soon be in a panic and short of breath. Shock is common with severe reactions; therefore, with any tightness of the chest, a doctor should be consulted.

    Intense Sense of Fear

    • Feeling panic or immediately feeling that something is wrong is a body's warning to a severe allergic reaction. It's most likely followed by one of the more threatening symptoms like immense swelling, difficulty breathing or anaphylaxis.

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