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About Brain Tumor

Allergies occur when your immune system reacts to a foreign substance — such as pollen, bee venom or pet dander — or a food that doesn’t cause a reaction in most people. Your immune system produces substances known as antibodies


  • Itchy, watery eyes.
  • Itchy nose.
  • Sneezing.
  • Runny nose.
  • Rashes.
  • Hives (a rash with raised red patches)
  • Stomach cramps.
  • Vomiting.


  • Nasal corticosteroids are nose sprays. …
  • Antihistamines block histamine, a trigger of allergic swelling. …
  • Mast cell stabilizers keep your body from releasing histamine. …
  • Decongestants reduce stuffiness by shrinking swollen membranes in the nose.


Skin testing can confirm many common types of allergies. In some cases, skin tests can be the most accurate and least expensive way to confirm allergens. For prick/scratch testing, the doctor or nurse places a small drop of the possible allergen on the skin.