Symptoms of Mild Allergic Reactions
- Hives (itchy red spots on the skin)
- Nasal congestion (known as rhinitis)
- Scratchy throat
- Watery or itchy eyes
Severe Allergic Reactions
- Abdominal cramping or pain
- Pain or tightness in the chest
- Difficulty swallowing
- Dizziness (vertigo)
- Fear or anxiety
- Flushing of the face
- Nausea or vomiting
- Heart palpitations
- Swelling of the face, eyes, or tongue
- Difficulty breathing
- Skin tests
- Challenge (elimination-type) tests
- Blood tests
- Food allergy
- Mold, pollen, and animal dander allergy
- Penicillin allergy
- Venom allergy (such as mosquito bites or bee stings)
- Allergic contact dermatitis (a rash you get from touching a substance)
- Challenge testing is useful in diagnosing food allergies. It involves removing a food from your diet for several weeks and watching for symptoms when you eat the food again.
- Avoid exposure to the allergen.
- Seek medical care if you are exposed to the allergen.
- Carry medications to treat anaphylaxis.
Frequently Asked Questions:
They can take from a few hours to a few days to disappear. If exposure to the allergen continues, such as during spring pollen season, allergic reactions can last for longer periods, such as a few weeks or months.
Four different types of allergic reactions are immediate, cytotoxic, immune-mediated, and delayed hypersensitivity reactions. Allergic reactions occur when the body's immune system reacts to a substance it considers harmful, called an allergen.
The most common signs and symptoms of an allergic reaction include coughing, difficulty or irregular breathing, wheezing, itchy throat or mouth, and difficulty swallowing. Nausea, vomiting, abdominal pain, and diarrhea. Red itching, bumps or bumps on the skin (hives), and redness of the skin.