Abstract
There were 152 cases of aseptic meningoencephalo-myelitis, including thirty-one cases of postinfectious ones, during the past twelve years up to the end of 1966.
The following results were obtained:
1) Viral encephalitis and Poliomyelitis had definitely diminished since 1962, but aseptic menigitis has increased year and year. Generally they were developed one and half to two times as frequently as in males than females. Poliomyelitis was seen most frequently between one and three years of age, but no age preponderance was found in the meningoencephalitis.
2) The postinfectious ones was 15 cases with mumps, 8 cases with meales, 7 cases with chickenpox and 1 case with german meales. The age and seasonal distribution was similar with each primary diseases.
Main clinical type following mumps and measles was meningitis and encephalitis respectively. Cases following chickenpox was divided in 3 cases of meningitis and 4 cases of encephalitis with 3 cases of ataxia.
The mean duration between the first signs of primary diseases and onset of meningoencephalitis was four days in mumps, six days in measles and nine days in chickenpox.
The main clinical symptome was headach, nausea in the case following mumps, unconsciousness in measles and cerebellar ataxia in chickenpox.
A marked pleocytosis was found in the meningitis following mumps especially.
3) Abnormal electroencephalographic findings was def initly corresponded with the first clinical signs, especially of unconsciousness and hemi- or monoplegia and the serial examinations of E. E. G. was very usefull with estimation of the prognosis.
