Subfebrile condition at children - a multicausal syndrome; it can be caused as the centers of a chronic infection (an adenoid disease, an adenoiditis, a cholecystitis, a pyelonephritis, a carious teeth, etc.), and series of chronically proceeding diseases (a tubercular intoxication, a lymphogranulomatosis, a medicinal allergy, tumours, rheumatic disease, etc.) . The special place among the reasons of a subfebrile condition at children is borrowed with the thermoneuroses, described with proof frustration of thermoexchange as a result of a functional lesion of the temperature center, as a result of a craniocerebral trauma or at a vegeto-vascular dystonia. Such subfebrile condition arises at children in which anamnesis adverse current of pregnancy and sorts at mother are marked is more often; physical or mental traumas, the general overstrain. Functional disturbances of a thermoregulation in some cases can be genetically caused (2-3 %); predisposition to the broken thermoregulation or special type of reaction of vegetative nervous system is more often transferred by right of succession. The certain value has a boring of a hypothalamus. Readiness quite often available children for temperature disturbances is realized by nonspecific stimuluses (endocrine disturbances, the overstrain, the transferred diseases, an overheat, etc.).

Clinical picture. It is possible to speak about a subfebrile condition, if rise of temperature up to 37,5 degrees lasts 2 weeks and more. Otherwise it is a question of a subfebrile fever.