My 10-year-old son has increasing problems with seasonal allergies -- we brace ourselves as spring comes with its pollen because this kid really reacts. Last year we kept him comfortable with over-the-counter medications, local honey, regular elderflower tea, lavender oil in a nebulizer/diffuser concoction as he sleeps, and a chest rub of lavender and eucalyptus oil in a carrier oil. The remedies helped keep him comfortable but he still needed a small dose of allergy medication, nearly…