Common cold Wikipedia. Common cold. Synonyms. Acute viral nasopharyngitis, nasopharyngitis, viral rhinitis, rhinopharyngitis, acute coryza, head cold1A representation of the molecular surface of one variant of human rhinovirus. Specialty. Infectious disease. Symptoms. Cough, sore throat, runny nose, fever23Complications. Otitis media, sinusitis4Usual onset2 days from exposure5Duration. Causes. Viral7Similar conditions. Allergic rhinitis, pertussis, sinusitis4Prevention. Free 3D Projection Mapping Software there. Hand washing, face mask2Treatment. Symptomatic2Medication. NSAIDs8Frequency. The common cold, also known simply as a cold, is a viralinfectious disease of the upper respiratory tract that primarily affects the nose. The throat, sinuses, and larynx may also be affected. Signs and symptoms may begin less than two days following exposure. They include coughing, sore throat, runny nose, sneezing, headache, and fever. People usually recover in seven to ten days. Some symptoms may last up to three weeks. In those with other health problems, pneumonia may occasionally develop. Well over 2. They spread through the air during close contact with infected people and indirectly through contact with objects in the environment followed by transfer to the mouth or nose. Risk factors include going to daycare, not sleeping well, and psychological stress. Symptoms are mostly due to the bodys immune response to the infection rather than to tissue destruction by the viruses themselves. People with influenza often show similar symptoms as people with a cold, though symptoms are usually more severe in the former. Influenza is less likely to result in a runny nose. There is no vaccine for the common cold. The primary methods of prevention are hand washing not touching the eyes, nose or mouth with unwashed hands and staying away from other sick people. Some evidence supports the use of face masks. No cure for the common cold exists, but the symptoms can be treated. Nonsteroidal anti inflammatory drugs NSAIDs such as ibuprofen may help with pain. Antibiotics should not be used. Evidence does not support a benefit from cough medicines. The common cold is the most frequent infectious disease in humans. M/MV5BMjIwNzQwNTgyOF5BMl5BanBnXkFtZTcwNjQ0MzQzNw@@._V1_.jpg' alt='The Cold Light Of Day 1996' title='The Cold Light Of Day 1996' />Cold turkey describes the abrupt cessation of a substance dependence and the resulting unpleasant experience, as opposed to gradually easing the process through. I began serious exploration of winter coldframe gardening back in 1981 when I took the job of farm manager at a private school in Vermont. The program was supposed. The Worlds Healthiest Foods are healthpromoting foods that can change your life. Try the exciting new recipe from Day 2 of our upcoming 7Day Meal Plan. 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The Cold Light Of Day 1996' title='The Cold Light Of Day 1996' />International statesmen Des Browne, Wolfgang Ischinger, Igor Ivanov, and Sam Nunn call on Western and Russian leaders to take immediate steps to reduce the risk of a. The average adult gets two to four colds a year, while the average child may get six to eight. They occur more commonly during the winter. These infections have been with humanity throughout history. Signs and symptoms. The typical symptoms of a cold include a cough, a runny nose, nasal congestion and a sore throat, sometimes accompanied by muscle ache, fatigue, headache, and loss of appetite. A sore throat is present in about 4. In adults, a fever is generally not present but it is common in infants and young children. The cough is usually mild compared to that accompanying influenza. While a cough and a fever indicate a higher likelihood of influenza in adults, a great deal of similarity exists between these two conditions. A number of the viruses that cause the common cold may also result in asymptomatic infections. The color of the sputum or nasal secretion may vary from clear to yellow to green and does not indicate the class of agent causing the infection. Progression. A cold usually begins with fatigue, a feeling of being chilled, sneezing, and a headache, followed in a couple of days by a runny nose and cough. Symptoms may begin within sixteen hours of exposure2. They usually resolve in seven to ten days, but some can last for up to three weeks. The average duration of cough is eighteen days2. In children, the cough lasts for more than ten days in 3. Cause. Viruses. Coronaviruses are a group of viruses known for causing the common cold. They have a halo or crown like corona appearance when viewed under an electron microscope. The common cold is a viral infection of the upper respiratory tract. The most commonly implicated virus is a rhinovirus 3. Other commonly implicated viruses include human coronavirus  1. Frequently more than one virus is present. In total over 2. 00 viral types are associated with colds. Transmission. The common cold virus is typically transmitted via airborne droplets aerosols, direct contact with infected nasal secretions, or fomites contaminated objects. Which of these routes is of primary importance has not been determined however, hand to hand and hand to surface to hand contact seems of more importance than transmission via aerosols. The viruses may survive for prolonged periods in the environment over 1. Transmission is common in daycare and at school due to the proximity of many children with little immunity and frequently poor hygiene. These infections are then brought home to other members of the family. There is no evidence that recirculated air during commercial flight is a method of transmission. People sitting in close proximity appear to be at greater risk of infection. Rhinovirus caused colds are most infectious during the first three days of symptoms they are much less infectious afterwards. Weather. The traditional theory is that a cold can be caught by prolonged exposure to cold weather such as rain or winter conditions, which is how the disease got its name. Some of the viruses that cause the common colds are seasonal, occurring more frequently during cold or wet weather. The reason for the seasonality has not been conclusively determined. Possible explanations may include cold temperature induced changes in the respiratory system,4. The apparent seasonality may also be due to social factors, such as people spending more time indoors, near infected people,4. There is some controversy over the role of low body temperature as a risk factor for the common cold the majority of the evidence suggests that it may result in greater susceptibility to infection. Other. Herd immunity, generated from previous exposure to cold viruses, plays an important role in limiting viral spread, as seen with younger populations that have greater rates of respiratory infections. Poor immune function is a risk factor for disease. Insufficient sleep and malnutrition have been associated with a greater risk of developing infection following rhinovirus exposure this is believed to be due to their effects on immune function. Breast feeding decreases the risk of acute otitis media and lower respiratory tract infections among other diseases,4. In the developed world breast feeding may not be protective against the common cold in and of itself. Pathophysiology. The symptoms of the common cold are believed to be primarily related to the immune response to the virus. The mechanism of this immune response is virus specific. For example, the rhinovirus is typically acquired by direct contact it binds to human ICAM 1 receptors through unknown mechanisms to trigger the release of inflammatory mediators. These inflammatory mediators then produce the symptoms. It does not generally cause damage to the nasal epithelium. The respiratory syncytial virus RSV, on the other hand, is contracted by direct contact and airborne droplets. It then replicates in the nose and throat before frequently spreading to the lower respiratory tract. RSV does cause epithelium damage. Human parainfluenza virus typically results in inflammation of the nose, throat, and bronchi.