Subfebrile.

ical diseases (tuberculosis intoxication, lymphogranulomatosis, drug allergies, tumors, rheumatism, etc.). Low-grade fever in children can also be caused by functional disorders of thermoregulation, which can be hereditary or caused by other factors, such as endocrine disorders, overexertion, past illnesses, overheating, etc.

The clinical picture of low-grade fever is characterized by a rise in temperature to 37.5°C, which lasts 2 weeks or more. With low-grade fever, the temperature can also rise to 37.5°C, but the duration of this condition is less than 2 weeks.

In all cases of low-grade fever, the child should be thoroughly examined, preferably in a hospital setting. The combination of low-grade fever with other manifestations of vegetative-vascular dystonia and the presence of signs of endogenous depression in a large patient make it possible to establish the functional nature of impaired thermoregulation. In such cases, in addition to a general clinical examination, it is necessary to conduct echoencephalography, cardiointervalography, EEG, and measure blood pressure. Thermoneurosis is also characterized by normalization of temperature during sleep and virtually no difference between axillary and rectal temperatures (no more than 0.5°C).

Treatment of low-grade fever in children depends on the cause of this condition. For chronic diseases, it is necessary to eliminate the main cause. In case of functional disorders of thermoregulation, the main place in treatment should be occupied by the correct organization of activities and rest, light sports, sufficient exposure to fresh air, psychotherapy, acupuncture, hydrotherapy, physiotherapy, and sedatives.

The prognosis and prevention of low-grade fever in children depend on the cause that caused this condition. If low-grade fever is caused by chronic diseases, then correct and timely treatment of the underlying disease can completely eliminate this syndrome. In case of functional disorders of thermoregulation, it is necessary to ensure proper organization of the daily routine and treatment aimed at improving the functioning of the autonomic nervous system.