Nasal drops are used in the treatment of nasal polyps. The maxillary sinuses form as invaginations from the nasal sac. Chronic rhinitis associated with polyps in the nasal cavity. The paranasal sinuses surround and drain into the nasal cavity. It may also be spread through direct contact with mouth or nasal secretions. Temperature gradient along the nasal mucosa is under physiological control. Decongestants can be administered in different ways such as tablets and nasal sprays. Nasotracheal intubation carries a risk of dislodgement of adenoids and nasal bleeding. Fluticasone are two manufactured steroids used to treat nasal symptoms. Cocaine is now predominantly used for nasal and lacrimal duct surgery. This marked the beginning of medical treatment of nasal allergies. The first line of treatment for nasal polyps is topical steroids. DMT1 also transports inhaled manganese across the nasal epithelium. Cocaine may also increase risk for autoimmune disease and damage nasal cartilage. This could lead to a sneeze in response to a stimulus other than nasal irritation.