What is immunotherapy?

Immunotherapy treats allergies by desensitizing your immune system. During immunotherapy, you get regular doses of your allergen. 

With consistent exposure to your allergen, you develop protective antibodies that block the reaction. As a result, you have fewer and less severe allergic reactions. In some cases, your allergies may even disappear.

Before you can start immunotherapy, you need to have allergy testing to identify your exact allergens. Immunotherapy involves allergy shots for most people. However, some people may qualify for sublingual immunotherapy.

What allergies does immunotherapy treat?

You can get allergy shots for nearly every type of allergy. Allergy Asthma & Sinus Center frequently uses this type of immunotherapy to treat hay fever (allergic rhinitis) caused by:

  • Pollen (grasses, trees, and ragweed)
  • Mold spores
  • Dust mites
  • Animal dander

Allergy shots also treat insect allergies and help reduce asthma attacks when allergies trigger them.

What happens during allergy immunotherapy with shots?

When allergy shots begin, called the buildup phase, you get 1-3 shots every week. Your first shot contains a very small dose of your allergen. Each subsequent shot injects a slightly higher amount, giving you just enough to stimulate your immune system.

After about 3-6 months, you enter a second stage called the maintenance phase. During this phase, you get 1-3 shots each month, and they contain the same dose each time. You stay in maintenance until you get optimal symptom relief.

The maintenance phase usually lasts 3-5 years. Though you may start to notice the difference in the first year of maintenance, it usually takes longer to get the best results.