Hay fever (allergic rhinitis or pollinosis), is an allergy characterized by sneezing, itchy and watery eyes, a runny nose and a burning sensation of the palate and throat. It is usually caused by allergies to airborne substances such as dust, moulds, pollens, animal fur and feathers. It is often aggravated by a food allergy, the most common being an allergy to milk.

Hay fever is most common in people with a family history of similar complaints or a personal history of eczema, hives (urticaria), and/or asthma.

The best treatment is avoidance of the allergen. However, since this is not always possible, a variety of antihistamines, decongestants, and intranasal steroids may be prescribed. Various essential oils help with the symptoms, but the specifics vary from person to person. Oils that have been recommended by aromatherapists include Blue Camomile, Lemon Balm, Lavender, and an increase of Vitamin C and Beta carotene should promote healing of the mucus membranes.
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