COMPLICATION THAT MAY FOLLOW A COLD OR INFLUENZA: BRONCHITIS
Because the respiratory tract is a series of cavities (sinuses, lungs etc.), connected by air passages, viruses can spread from the nose to the sinuses and throat and into the middle ear trachea, larynx, bronchial tubes and lungs. Secondary infections spreading to these locations can cause complications, some quite serious.
Bronchitis is inflammation of the mucous membranes that line the bronchial tubes, which carry air to the lungs. It is often caused by the common cold virus itself, in which case no medical cure is possible. However, a secondary bacterial infection is common. Symptoms often include a mild back or chest pain exacerbated by a deep, dry cough which brings up gray or yellow phlegm from the lungs. Bronchitis is also often accompanied by a fever which may last for as long as five days. Breathlessness and wheezing are other common symptoms.
Since bronchitis is not a lung infection, it is usually serious only if it becomes chronic. The usual treatment is to remain home in a warm room with humidified air and to bolster immunocompetence by practicing the same therapies recommended for a cold. If bronchitis does not begin to improve in forty-eight hours, or if you cough up blood, experience breathlessness or have a fever higher than 101°F, a physician should be consulted.
Lingering bronchitis symptoms often persist for two to three weeks after a cold or flu has ended.
Ear Infection. Each ear is connected to the throat by the Eustachian tube, a passage lined by mucosal tissue. During a cold or flu infection, the Eustachian tubes may become infected by bacteria. Due in part to their constant sniffling, ear infections are more common in children. A sharp pain in the ears caused by pressure build-up is the usual symptom.
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