A clinical study was done on the 33 cases of bacterial meningitis who were admitted to, the dept. of internal medicine, Chungnam Nat. Univ. Hoap. since. Jan. 1974 to Mar. 1977, especially on the aspect of differential diagnosis.
The results were as followings:
1. Acute pyogenic meningitis were 13 cases and tuberculous 20 among the 33 cases, in. which the most prevalent age group was the 3rd decade without any significant difference: in the sex in both diseases.
2. The most frequent symptoms were headache and fever, while the neck stiffness was. the most frequent physical finding on admission in both pyogenic and tuberculous meningitis.
3. In the pyogenic meningitis, the duration since the onset to first visit was 1-10 days but in the tuberculous meningitis, it was much longer, up to 70 days.
4. The degree of leukocytosis in peripheral blood and the C. S. F. were more severe iii the pyogenic than the tuberculous meningitis, but there was no definite statistical significance.
5. In the pyogenic meningitis the differential count of the WBC in C. S. F. shows neutrophlia, while lymphocytosis in the tuberculous meningitis.
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