Upper respiratory fluid reflux may refer to postnasal drip syndrome, also known as upper airway cough syndrome, associated with acute rhinitis, allergic rhinitis, chronic sinusitis and other conditions, nasal secretions reflux to the throat causing cough and other discomforts. It can be treated with topical hormonal, anti-allergic and macrolide drugs under the guidance of a doctor. 1. Acute rhinitis: If you suffer from acute rhinitis, it may be a viral infection of the upper respiratory tract, leading to reflux of fluid, nasal congestion, nasal sound and other symptoms. It can be treated by topical hormones, oral first-generation antihistamines and other drugs, such as budesonide nasal spray, chlorpheniramine maleate tablets and so on. 2. Allergic rhinitis: Allergic rhinitis is a common chronic inflammatory disease with fluid reflux in the upper respiratory tract. It can be treated with oral anti-allergic and glucocorticoid drugs, such as Ebastine tablets and mometasone furoate nasal spray. 3. Chronic sinusitis: it is caused by a chronic inflammation of the mucous membrane and submucous layer of the sinuses, and will be prone to the phenomenon of reflux of fluid from the upper respiratory tract. It can be treated by oral macrolides, topical hormonal drugs such as roxithromycin and mometasone furoate nasal spray. When the condition is serious, it can be treated by surgery. When there is reflux of nasal secretions into the throat, you should go to the hospital in time and be treated under the guidance of the doctor.