The ash juniper tree, an evergreen shrub with low branches and a twisted trunk, is a bothersome source of pollen for many. Native to Texas, this tree produces large quantities of pollen from summer's end through the winter. Each tree's pollen may spread for miles, causing allergy sufferers to experience bothersome symptoms, according to the National Institute of Environmental Health Sciences (NIEHS).
Itchy Eyes and Sneezing
Itchy eyes and sneezing can result from exposure to pollen from the ash juniper tree. When the immune system identifies the pollen as a harmful substance, it overreacts, causing the body to release chemicals called histamines. Histamines pass through the bloodstream, causing the symptoms of allergies such as itchy eyes and sneezing (hay fever). By blocking the histamine, antihistamine drugs can stop the allergic symptoms from occurring. Benadryl is an example of an over-the-counter antihistamine.
Nasal Congestion
Allergies to ash juniper trees can cause allergic reactions common among cold and allergy sufferers. Nasal congestion (a stuffy nose) occurs when the nasal tissues and blood vessels become congested with excess fluids. To relieve nasal congestion, an over-the-counter decongestant may be helpful, though an increase in blood pressure can occur--making the medicine dangerous for those with existing health conditions. In addition, using the medication for more than a few days can cause rebound congestion, worsening the symptoms caused by ash juniper pollen, according to the Mayo Clinic.
Difficulty Sleeping & Eye Infections
Allergy symptoms such as nasal congestion resulting from exposure to ash juniper pollen can lead to sleep difficulty. Decreased oxygen levels and reduced airflow due to the upper airways collapsing during sleep can hamper a good night's rest, according to Allergy New Zealand. In addition, infections of the eyes (conjunctivitis) are more common due to constant rubbing of itchy eyes. To avoid sleep disturbances, keep your head elevated at night to ease breathing. To avoid infections of the eyes, refrain from rubbing your eyes and talk to your doctor about eyedrops or other medications that may help instead.
