Summer is certainly coming! Great news for most of us as we welcome the lengthening of the days, unfortunately for others this means the start of the dreaded hay fever season. Personally I have never suffered from this condition, but I have some family members who do and I know it can be really miserable. Hay fever is caused by an allergic reaction to pollen causing the release of histamine, which causes inflammation around the nose and eyes. Characteristic symptoms include red, itchy eyes, and a runny or congested nose, and can include a cough and an inflamed throat.