Though the choriomeningitis of human beings that is due to the virus of Rivers and Scott is usually a relatively mild malady ending in complete recovery—so mild indeed that it is often designated "acute benign lymphocytic meningitis"—the case to be reported here indicates that it may sometimes be followed by a severe chronic arachnoiditis which causes widespread obliteration of the spinal subarachnoid space.
Florence A., a white woman now 37 years of age, suffered from an attack of lymphocytic meningitis in February 1936.
Aside from a trauma of the head some thirteen years earlier from which she had made a good recovery, her previous history had been uneventful.
About two weeks before her admission to the Johns Hopkins Hospital in February 1936 she lost her appetite and complained of sore throat, general sensitiveness, aching pains and fever (temperature of 103 F.). She became irrational, had a convulsive seizure and, since