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Lower respiratory tract infection (LRTI) is a term often used as a synonym for pneumonia but can also be applied to other types of infection including lung abscess and acute bronchitis. Symptoms include shortness of breath , weakness, fever , coughing and fatigue. [ 3 ]
The infection may last from a few to ten days. [2] The cough may persist for several weeks afterward with the total duration of symptoms usually around three weeks. [2] [1] Some have symptoms for up to six weeks. [3] In more than 90% of cases, the cause is a viral infection. [1]
The lower respiratory tract consists of the trachea (windpipe), bronchial tubes, bronchioles, and the lungs. [6] Lower respiratory tract infections (LRIs) are generally more severe than upper respiratory infections. LRIs are the leading cause of death among all infectious diseases. [7] The two most common LRIs are bronchitis and pneumonia. [8]
RSV, or respiratory syncytial virus infection, is a common illness that usually presents as a mild cold. Almost everyone has been infected with it by age 2, according to the CDC.
In 1901 an article was published on the treatment of chronic bronchitis in the elderly. The symptoms described have remained unchanged. The cause was thought to be brought on by dampness, cold weather, and foggy conditions, and treatments were aimed towards various cough mixtures, respiratory stimulants, and tonics.
Pneumonia frequently starts as an upper respiratory tract infection that moves into the lower respiratory tract. [55] It is a type of pneumonitis (lung inflammation). [56] The normal flora of the upper airway give protection by competing with pathogens for nutrients.
The infection causes mild, cold-like symptoms but it can lead to severe lung infections like pneumonia and infant bronchiolitis and is especially dangerous to toddlers under two or with other ...
Physical manifestations of Pneumonitis range from mild cold-like symptoms to respiratory failure. Most frequently, those with pneumonitis experience shortness of breath, and sometimes a dry cough. [8] Symptoms usually appear a few hours after exposure and peak at approximately eighteen to twenty-four hours. [7] Other symptoms may include ...