HYPERTHERMIA OF UNCLEAR GENESIS IN CHILDREN. A CLINICAL CASE REPORT

Fever of unknown origin remains one of the most difficult diagnostic problems in medicine. Since fever of unknown origin can be caused by more than 200 malignant/neoplastic, infectious, rheumatic/inflammatory and various diseases. Fever is the most common symptom in children and can be classified as fever with or without a focus. Fever without focal point can last less than 7 days and is classified as fever without localizing signs and fever of unknown origin (FUO). FUO is defined as a temperature above 38.3 °C for more than 3 weeks or the inability to establish a diagnosis after 1 week of inpatient studies. The most common causes of FUO in children are infections, connective tissue diseases and neoplasms.