Medical management of rhinitis in pregnancy

Medical treatment options for patients with rhinitis during pregnancy need careful considerations. It is important to distinguish between the causes of rhinitis, as this can influence treatment. Conservative options are important for patients with pregnancy-induced rhinitis (PIR) and pre-existing allergic or non-allergic rhinitis. Education and knowledge that PIR symptoms will resolve after pregnancy can offer some relief. Other strategies such as exercise, positioning, saline nasal douching/lavage, and nasal valve dilators are safe in pregnancy and can have a benefit in these patients with rhinitis of any aetiology. The main medical therapies usually used in rhinitis cannot always be directly translated to pregnant patients due to potential teratogenic effects. Topical corticosteroids have generally shown to be safe with budesonide having the strongest recommendations. Oral corticosteroids are mostly used in moderate-severe disease and should be avoided in the first trimester. Oral decongestants have associations with cardiac, ear, gut and limb abnormalities and are not recommended in the first trimester. Loratadine and cetirizine have been the most well-studied second-generation antihistamines and are generally considered safe. There has been no reported increased risk of teratogenicity with anticholinergics or cromones, with the latter being one of the first line options in pregnant women with allergic rhinitis. The role of allergen immunotherapy needs further research, but current guidance states it can be continued if already initiated prior to pregnancy. The management of rhinitis in pregnancy can therefore be complex. This review aims to evaluate the current medical management options for rhinitis in pregnancy.