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Sinusitis (or rhinosinusitis) is defined as an inflammation of the mucous membrane that lines the paranasal sinuses and is classified chronologically into several categories: [ 22 ] Acute sinusitis – A new infection that may last up to four weeks and can be subdivided symptomatically into severe and nonsevere.
Nasal congestion. Other names. Nasal blockage, nasal obstruction, blocked nose, stuffy nose, plugged nose. Medical products for diminution of nasal congestion. Specialty. Otorhinolaryngology. Nasal congestion is the partial or complete blockage of nasal passages, leading to impaired nasal breathing, usually due to membranes lining the nose ...
An upper respiratory tract infection (URTI) is an illness caused by an acute infection, which involves the upper respiratory tract, including the nose, sinuses, pharynx, larynx or trachea. [3][4] This commonly includes nasal obstruction, sore throat, tonsillitis, pharyngitis, laryngitis, sinusitis, otitis media, and the common cold. [5]: 28 ...
Allergic rhinitis, of which the seasonal type is called hay fever, is a type of inflammation in the nose that occurs when the immune system overreacts to allergens in the air. [6] Signs and symptoms include a runny or stuffy nose, sneezing, red, itchy, and watery eyes, and swelling around the eyes. [1] The fluid from the nose is usually clear. [2]
A CT scan showing evidence of the nasal cycle: the more potent airway is on the right of the image, the swollen turbinates congesting the left. The nasal cycle is the subconscious [1] [2] alternating partial congestion and decongestion of the nasal cavities in humans and other animals. This results in greater airflow through one nostril with ...
Nonallergic rhinitis is rhinitis — inflammation of the inner part of the nose—not caused by an allergy. Nonallergic rhinitis displays symptoms including chronic sneezing or having a congested, drippy nose, without an identified allergic reaction with allergy testing being normal. [ 1 ][ 2 ] Other common terms for nonallergic rhinitis are ...
Nasal polyps are noncancerous growths within the nose or sinuses. [ 1 ] Symptoms include trouble breathing through the nose, loss of smell, decreased taste, post nasal drip, and a runny nose. [ 1 ] The growths are sac-like, movable, and nontender, though face pain may occasionally occur. [ 1 ] They typically occur in both nostrils in those who ...
Sinus (anatomy) A sinus is a sac or cavity in any organ or tissue, or an abnormal cavity or passage. In common usage, "sinus" usually refers to the paranasal sinuses, which are air cavities in the cranial bones, especially those near the nose and connecting to it. Most individuals have four paired cavities located in the cranial bone or skull.