A Grass Allergy: What Causes It?

One of the most prevalent allergies in the United States, a grass allergy is also one of the most exasperating afflictions. For the estimated 50 million Americans who suffer from all types of allergies (according to the Asthma and Allergy Foundation of America), a grass allergy can be frustrating and can even hold them back from living their life to the fullest. Further, many people with a grass allergy also suffer from other types of allergies. With the itchy eyes, runny/stuffy nose, headaches, and other symptoms, living with a grass allergy alone can be unbearable, let alone if you also suffer from indoor allergies. Unlike a bacteria or virus, in which your immune system attacks a malicious outside matter, a grass allergy is caused by the body fighting a normally harmless substance.

Some common grasses that can trigger a grass allergy include:

• Timothy
• Johnson
• Bermuda
• Kentucky bluegrass
• Orchard
• Sweet vernal

As the name suggests, a grass allergy is triggered by pollen, specifically from grass. Because of this, a grass allergy is usually worse in the spring and summer months, when pollen counts are higher. However, the severity of a grass allergy is impacted by the temperature, humidity, and weather. For example, when it rains, pollen counts are reduced because they are washed away and unable to float on the air currents as well as on dry air.  Further, pollen counts are generally lower in the late afternoon. However, if you or your neighbor cuts the lawn, your grass allergy may be triggered by the pollen released by the lawnmower.

Once you understand the causes of a grass allergy, you can take steps to avoid the runny nose, itchy eyes, and other symptoms.