what is tree allergy
A tree pollen allergy is a sign that your immune system is prone to make mistakes. When you were first exposed to the pollen of trees, your body thought it was being invaded by something dangerous and therefore flagged tree pollen as a harmful substance.Ever since then, your body has been on the lookout for tree pollen.hen you were first exposed to the pollen of trees, your body thought it was being invaded by something dangerous and therefore flagged tree pollen as a harmful substance. Ever since then, your body has been on the lookout for tree pollen.