“…55 Guidelines provide evidence-based recommendations to inform the management of allergic rhinitis under the headings 'allergen avoidance', 'pharmacological treatment', and 'specific immunotherapy'. 55,[109][110][111] Allergen avoidance can be effective for reducing the symptoms of allergic rhinitis, [112][113][114][115] though single interventions may be insufficient to control symptoms. 116 Non pharmacological measures with some efficacy include saline douches, 55,117-120 rhinophototherapy, 121 nasal filters, 122 pollen-blocker creams, 123 or cellulose powder.…”