Spring , Summer and Fall brings a surge in allergies. Suppression of allergies using anti-histamines, allergy sprays etc. only address the issue superficially. Understanding the link between digestion and allergies helps in long term relief from many types of allergies like nasal allergies, asthama and skin allergies.
According to Ayurveda, poor digestion is the root cause for a weak and mal functioning immune system that causes allergies. For more reading on this, here is my recently published work : good-digestion-is-equal-to-no-allergies