Nasal spray efficient way of transporting drugs with potential use in crossing the blood–brain barrier. Antihistamines work by competing for receptor sites to block the function of histamine, thereby reducing the inflammatory effect. Antihistamine nasal sprays include: Corticosteroid nasal sprays can be used to relieve the symptoms of sinusitis, hay fever, allergic rhinitis and non-allergic (perennial) rhinitis. They can reduce inflammation and histamine production in the nasal passages, and have been shown to relieve nasal congestion, runny nose, itchy nose and sneezing. Side effects may include headaches, nausea and nose bleeds. Corticosteroid nasal sprays include: Influenza vaccine is available in the form
Nasal polyp The most prominent symptoms of nasal polyps result blockage of the nasal passage. People with nasal polyps due to aspirin intolerance often have symptoms known as Samter's triad, which consists of asthma worse with aspirin, a skin rash caused by aspirin, and chronic nasal polyps. The exact cause of nasal polyps is unclear. They are, however, commonly associated with conditions that cause long term inflammation of the sinuses. This includes chronic rhinosinusitis, asthma, aspirin sensitivity, and cystic fibrosis. Various additional diseases associated with polyp formation include: Chronic rhinosinusitis is a common medical condition characterized by symptoms of sinus inflammation lasting