Sneezing
One of the first signs of a hemlock pollen allergy is frequent sneezing. This is a common response by the body to remove allergens from the nasal passage.
Nasal Congestion
Nasal congestion or a runny nose is another common symptom. The body produces additional mucus to trap the allergens, this leads to a stuffy or runny nose.
Itchy and Watery Eyes
Exposure to hemlock pollen can cause the eyes to become itchy and watery, a condition known as allergic conjunctivitis. The body's immune response to the allergens causes inflammation, leading to the discomfort.
Itchy Throat and Ears
People allergic to hemlock pollen may also experience an itchy throat or ears. This is due to the body's inflammatory response to the allergen.
Cough
A persistent dry cough can be a symptom of hemlock pollen allergy. This happens as the body tries to clear the allergens from the respiratory system.
Asthmatic Symptoms
Some people might experience asthmatic symptoms such as wheezing, chest tightness or difficulty breathing. Hemlock pollen, like other pollens, can trigger these symptoms in those who have asthma or severe allergies.