Predisposing conditions | N (%) |
---|---|
Dental procedure/tooth extraction | 18 (15.3) |
Dental infections | 17 (14.4) |
Head trauma/past surgery | 14 (11.9) |
Otitis media/mastoiditis | 13 (11) |
Corticosteroids/other immunosuppressants | 11 (9.3) |
Chronic alcoholism | 10 (8.5) |
Diabetes mellitus | 8 (6.8) |
Malignancy | 8 (6.8) |
Ischemic heart disease | 9 (7.6) |
Chronic obstructive pulmonary disease | 5 (4.2) |
Autoimmune diseases | 4 (3.4) |
Chronic kidney disease | 3 (2.5) |
Chronic liver disease | 2 (1.7) |