Despite of Aspirin use in acute virus infection and reduce of incidence in many parts of the world, the Reye's syndrome is also actual in our country. Reye's syndrome was described for the first time in 1963. It's a non-inflammatory encephalopathy and lipid infiltration of liver and other organs. Etiology is unknown. Some viruses, some chemical compounds,
Aspirin and genetically abnormal answer have the role. The damage of mitochondria appears. Organism is in hard catabolism. The biochemical parameters in serum and liquor were followed at 26 children cured in treated in Pediatrics Clinic in Priština in the period from 1991-1998. The extreme hypoglycemia (<2.2 mmol/L) was in 46,1%, medium hypoglycemia
(2,3-3-,3 mmol/L) in 7,7%. Three times high transaminases appeared in 46% of children. The level of chaemostasis was reduced in 11,5% of children. Half of the total number children had the higher values of urea and creatinine. Hyperproteinorachia in liquor was 27% and hypoglycorachia was 19,3%. Metabolic acidosis was present in 61,5%. Half of the children had convulsions and pneumonia. Enterocolitis, acute renal insufficiency, anemy and urinary infection were also present.