According to Mayo Clinic, tree pollen allergies are also referred to as hay fever, with symptoms that include watering eyes, sneezing, runny nose, coughing and an itching sensation on the roof of the mouth. Additional symptoms can include painful sinuses, lowered sense of taste and a bluish tint to the skin directly beneath the eyes.
WebMD explains that trees such as ash, birch, mulberry, cedar and box elder release pollens during late winter and early spring. Pollen counts tend to be higher when the weather is warm and windy because winds can carry pollen for several miles. Individuals who are allergic to birch tree pollens may also experience symptoms of facial itchiness or swelling following ingestion of fruits such as almonds, apples or pears.
Healthline explains that while hay fever is usually not considered dangerous, untreated symptoms can lead to sinusitis, an inflammation of the sinus cavities. Symptoms of sinusitis include nasal pain and congestion, off-color nasal discharge, post-nasal drip and headache. If the sinuses become infected, fever may also be present. Hay fever may also trigger ear infections in young children and exacerbate asthma symptoms. Allergy symptoms can be treated with antihistamines, nasal sprays, decongestant medications and allergy shots.