Why does subfebrile temperature occur?

Subfebrile body temperature is a temperature that rises slightly and stays within 37-38 degrees Celsius. This temperature is quite a frequent phenomenon, the reasons for which are very diverse.

The long subfebrile temperature is quite common in women with asthenic physique, which can be explained primarily by the fact that this group is most susceptible to the occurrence of infectious diseases of the urogenital system, as well as psycho-somatic disorders.

If the temperature for a long time keeps at a level less than 38 degrees, then the probability that the patient has a severe organic lesion is rather small. Most often, a prolonged subfebrile temperature is characteristic of autonomic dysfunction. Although, it is not uncommon for cases when serious infectious diseases become its cause.

Infectious diseases that can cause a long low-grade fever

Among such diseases, tuberculosis, which is characterized by unmotivated weakness, sweating, increased fatigue and, of course, the occurrence of a chronic cough that lasts for more than 3 weeks, is the first to prevail.

Subfebrilitis can also occur with various focal infectious diseases that are chronic. Although this opinion is controversial, because to prove that any chronic infectious disease can cause a long subfebrile temperature can only be if after a sharp recovery (for example, in the case of an operative removal of the focus of infection), the body temperature immediately returns to normal .

Another disease that does not belong to the infectious, but often can cause subfibrilita is thyrotoxicosis. In addition to a small but steady rise in temperature, the following symptoms are common in patients with thyrotoxicosis : nervousness, high fatigue and sweating, tachycardia, rapid weight loss. To determine the presence of thyrotoxicosis in a patient at any stage is simple enough, you only need to pass a blood test for thyroid hormones and, if their level is high, immediately seek help from an endocrinologist who should draw up a detailed treatment plan, most often consisting of hormone therapy.

Subfebrile temperature in the evenings

In the event that subfebrile is observed quite often and in the evenings, it can, as not to mean anything serious, for example, simply to be a consequence of psychoemotional stress, and to talk about quite real diseases. Prolonged presence of subfebrile temperature is one of the signs of such a disease as AIDS. In addition, there are many other diseases that can cause a constant evening subfebrile, so this syndrome should not be left without attention - it is necessary to immediately consult a physician.

Subfebrile temperature in adolescents

In children, the presence of permanent subfebrile can also not be considered a norm (although sometimes this happens). Most often it is caused by such reasons as a protracted infectious disease. However, there is a type of people, both children and adults, for whom the presence of subfebrile temperature is the norm and they do not feel any negative consequences when it occurs.

Also children, especially in adolescence, very often have an unstable psychoemotional state, which, if any psychosomatic disease develops, accounts for up to a third of all cases of subfebrilitis.