Table 2.
Cause | Number | Percent |
---|---|---|
Feline infectious peritonitis (FIP)a | 47 | 51 |
Viral (non-FIP)b | 32 | 35 |
Protozoal cysts (eg, toxoplasmosis) | 8 | 9 |
Bacterial infection | 3 | 3 |
Feline immunodeficiency virus (FIV) | 1 | 1 |
Cryptococcosis | 1 | 1 |
Data from Bradshaw JM, Pearson GR, Gruffydd-Jones TJ. A retrospective study of 286 cases of neurological disorders of the cat. J Comp Pathol 2004;131:112–20.
One of the cats with FIP was also found to have an incidental nematode larvae (Toxocara) within its lateral ventricle.
Nonsuppurative meningitis and/or encephalitis was present, but no cause could be found. Five of these cats also had changes consistent with feline spongiform encephalopathy.