Ranging from runny nose, sore throat, cough, to breathing difficulty, and lethargy.
An acute upper respiratory infection (URI) is a contagious infection of your upper respiratory tract. Your upper respiratory tract includes the nose, throat, pharynx, larynx, and bronchi. Upper respiratory tract infection (URI) is a nonspecific term used to describe acute infections involving the nose, paranasal sinuses, pharynx, larynx, trachea, and bronchi. The prototype is the illness known as the common cold, which is discussed here, in addition to pharyngitis, sinusitis, and tracheobronchitis. Upper respiratory infection facts. 1  Upper respiratory infections are one of the most common reasons for doctor visits. 2  Upper respiratory infections are the most common illness resulting in missed work or school. 3  Upper respiratory infections can happen at any time, but are most common in the fall and winter. 1 The upper respiratory tract includes the mouth, nose, throat, larynx (voice box), and trachea (windpipe). 2  Upper respiratory infections are often referred to as  colds 3  .. The lower respiratory tract includes the bronchial tubes and the lungs. 4  Bronchitis and pneumonia are infections of the lower respiratory tract. 1 Upper respiratory infections are the most common illness resulting in missed work or school. 2  Upper respiratory infections can happen at any time, but are most common in the fall and winter. 3  The vast majority of upper respiratory infections are caused by viruses and are self-limited. 1 Upper respiratory infections can happen at any time, but are most common in the fall and winter. 2  The vast majority of upper respiratory infections are caused by viruses and are self-limited. 3  Symptoms of upper respiratory infection include. 4  cough, 5  sneezing, 6  nasal discharge, 7  nasal congestion, 8  runny nose, Upper respiratory infections are one of the most frequent causes for a doctor visit with varying symptoms ranging from runny nose, sore throat, cough, to breathing difficulty, and lethargy. In the United States, upper respiratory infections are the most common illness leading to missing school or work. The respiratory tract is divided into two categories based anatomy. 1  The upper respiratory tract includes the mouth, nose, throat, larynx (voice box), and trachea (windpipe). 2  Upper respiratory infections are often referred to as  colds 3  .. The lower respiratory tract includes the bronchial tubes and the lungs. The term, upper respiratory infection, often refers to a head cold or the common cold. However, a broader definition of an upper respiratory infection, or URI, is any infection of the upper parts of the respiratory tract, including the nasal passages, nasal sinuses, and throat.
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what causes an upper respiratory infection