What is the cause of persistent low fever

summary

Low fever is a common symptom, and it is easy to be ignored when low fever occurs. Many diseases have symptoms of low fever, such as chronic inflammation, rheumatism, tuberculosis, joint swelling and stiffness when low fever occurs, especially weakness, dry mouth and astringent eyes in the afternoon. So often hair low fever is how to return a responsibility?

What is the cause of persistent low fever

First: the general body temperature in the armpit between 37.1 ℃ to 37.5 ℃ is called low fever. Low fever is generally divided into physiological low fever and pathological low fever. There are many causes of pathological low fever. Chronic infection focus is the common cause, such as tuberculosis, chronic bronchitis, chronic pyelonephritis, chronic biliary tract infection, chronic hepatitis, pelvic inflammatory disease, tonsillitis, sinusitis, etc. Some non infectious diseases can also cause pathological low fever, such as hyperthyroidism, allergic diseases and connective tissue diseases (such as wind damp heat, drug fever, serum diseases, acute dermatomyositis, etc.), liver cirrhosis, intestinal ulcer disease and diencephalon syndrome, etc. Some people with low fever can not find organ diseases, which is called functional low fever. It is caused by autonomic nerve dysfunction. This kind of low fever accounts for more than half of all the causes of low fever. It is more common in young women. For example, low fever after infection and low fever in summer are all functional low fever.

Second: a variety of diseases can cause low fever. Fever is a symptom, rheumatism, tuberculosis, chronic inflammation, low immunity and other diseases can cause persistent low fever; long term psychological tension, emotional instability can also cause temperature center disorder, resulting in unexplained persistent low fever. Problems with any system of the body can cause a persistent low fever. What is the cause of low fever? It is difficult to find out through routine examination such as blood, urine and stool. Some low fever caused by bacterial infection can only be found through bacterial culture.

Third: the unknown low fever can not be overused. Fever is one of the reactions of the body to resist disease invasion. Low fever patients taking antipyretic drugs is not conducive to the treatment of the disease. Indiscriminate use of antipyretic drugs can also lead to leukopenia, aplastic anemia and other risks. When the body temperature is above 38 ℃, antipyretic should be considered.

matters needing attention

From the above introduction, we can learn about the causes of low fever. Patients can choose according to their own situation. Never use medicine casually. If it doesn't work after taking it, it will delay the treatment of the disease, which is not worth the loss.