Influenza, commonly known as "cold" is caused by a variety of respiratory virus diseases, of which 30% -50% of the nose of a serotype virus. Although the common cold-prone in the early winter, but in any season, such as spring, summer, may also occur in different seasons of the pathogenicity of influenza virus is not exactly the same. Distribution of influenza cases are sporadic and non-epidemic bacterial infection often easy to merge. Acute onset than the common cold, early symptoms of dry throat itching or burning sensation, sneezing, stuffy nose, runny nose, runny nose started to water samples; may be accompanied by pharyngodynia; generally no fever and systemic symptoms, or only low-grade fever, headache. In general by 5 to 7 days.
Differential diagnosis
(A) slow-onset respiratory tract infection, symptoms are relatively light, and no obvious symptoms of poisoning. And immunofluorescence serology tests, such as can be clearly diagnosed.
(B) meningeal encephalitis encephalitis (ECM) the early symptoms of meningitis are often flu-like, but obviously the seasonal meningitis, mostly children. Early severe headache, meningeal irritation symptoms, blood, the lips, such as herpes and influenza can identify with. Clear diagnosis of cerebrospinal fluid examination.
(C) The legionnaire's disease of the disease was particularly prevalent in the summer and autumn, clinically manifested as severe pneumonia, increased WBC, and liver and kidney complications, but the light flu-like cases. Erythromycin, rifampin and gentamicin and other antibiotics effective against the disease, contribute to etiology inspection confirmed.
(D) Mycoplasma pneumonia Mycoplasma pneumonia with primary viral pneumonia is similar to the X-ray findings, but the former is less severe diseases, cold agglutinin test and Streptococcus MG agglutination test may be positive.
Cold after the decline of human resistance, bacteria will often take advantage of. So, when a cold few days later, the fever is still not to reclaim, it should be noted that a mixture of bacterial infection, treatment should be to the hospital in time to prevent the into bronchitis.
Cold symptoms and very similar to the beginning of many diseases, but utterly different, and the effect can not be taken lightly.
If the fever, there are severe nausea, vomiting and recurrent, should be suspected brain lesions (such as meningitis, etc.) response. If the fever, do not want to eat greasy food, and there is nausea, vomiting and other symptoms, it should be suspected to be the reaction of infectious hepatitis.
Influenza virus at the time, and sometimes can cause myocarditis, the symptoms are often in the cold after a week, there are flustered, chest tightness, shortness of breath, especially in fast heartbeat, more than 100 times a minute. Irregular heartbeat, it should be timely to go to the hospital for treatment.
