Causes of Common cold


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Cause of Common cold: More than 200 different viruses cause colds.

Cause details for Common cold: Does cold weather cause a cold? Although many people are convinced that a cold results from exposure to cold weather, or from getting chilled or overheated, NIAID grantees have found that these conditions have little or no effect on the development or severity of a cold. Nor is susceptibility apparently related to factors such as exercise, diet, or enlarged tonsils or adenoids. On the other hand, research suggests that psychological stress, allergic disorders affecting the nasal passages or pharynx (throat), and menstrual cycles may have an impact on a person's susceptibility to colds. 1

Cold symptoms are probably the result of the body's immune response to the viral invasion. Virus-infected cells in the nose send out signals that recruit specialized white blood cells to the site of the infection. In turn, these cells emit a range of immune system chemicals such as kinins. These chemicals probably lead to the symptoms of the common cold by causing swelling and inflammation of the nasal membranes, leakage of proteins and fluid from capillaries and lymph vessels, and the increased production of mucus.1

Common cold as a symptom: Conditions listing Common cold as a symptom may also be potential underlying causes of Common cold. The list of conditions listing Common cold as a symptom in our database includes:

Causes of Common cold: medical news summaries: The following medical news items are relevant to causes of Common cold:

Related information for causes of Common cold: Further relevant information on causes of Common cold may be found in the risk factors for Common cold and underlying causes of Common cold.

Footnotes:
1. excerpt from The Common Cold, NIAID Fact Sheet: NIAID

Last revision: May 26, 2003

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