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Timothy grass allergy is a seasonal allergic reaction causing hay fever symptoms including sneezing, runny nose, itchy eyes, and congestion. It is caused by an immune system overreaction to pollen proteins from Phleum pratense (Timothy grass), producing specific IgE antibodies. The Respiratory Allergy Profile Region IX is the most important test for diagnosis as it detects Timothy grass-specific IgE antibodies.
Timothy grass allergy is caused by your immune system mistakenly identifying pollen proteins from Phleum pratense (Timothy grass) as harmful invaders. When you breathe in Timothy grass pollen during late spring and early summer, your body produces specific IgE antibodies that trigger the release of histamine and other chemicals. These chemicals cause the classic hay fever symptoms like sneezing, itchy watery eyes, runny nose, and nasal congestion that make pollen season so miserable.
The Respiratory Allergy Profile Region IX is the most important test for Timothy grass allergy because it measures the specific IgE antibodies your body produces in response to Timothy grass pollen. This blood test provides definitive confirmation that Timothy grass is triggering your symptoms rather than other pollens or allergens that cause similar hay fever reactions. The panel also tests for other regional allergens simultaneously, helping identify if you have multiple pollen sensitivities. Elevated Timothy grass IgE levels confirm the allergy and help your doctor create a targeted treatment plan including the right medications, timing for allergy shots, and specific avoidance strategies during peak grass pollen season.
You should get tested if you experience sneezing, itchy watery eyes, runny nose, or nasal congestion specifically during late spring and early summer when grasses are pollinating. Testing is especially important if over-the-counter allergy medications are not controlling your symptoms, if you are considering allergy immunotherapy shots, or if you need to know your exact triggers for outdoor activity planning. You can get tested any time of year since the blood test measures your antibody levels rather than requiring direct allergen exposure like skin testing does.
What this means
Your IgE antibodies to common ragweed are elevated, indicating a positive sensitization. This suggests ragweed pollen is likely a trigger for your late summer and fall allergy symptoms like sneezing, runny nose, and itchy eyes. Understanding this trigger allows you to take preventive measures during ragweed season, typically August through October in your region.
Recommended actions
Monitor pollen counts and stay indoors when ragweed levels are high, especially on dry, windy days
Keep windows closed during ragweed season and use air conditioning with clean filters
Shower and change clothes after spending time outdoors to remove pollen
Consider starting antihistamines before ragweed season begins and discuss immunotherapy options with your doctor
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