my mom has been diagnosed with encephalitis.  Test results from spinal fluid were negative.  these tests were westnile virus, lyme disease, herpes simplex virus, valley fever,  all negative.  Please help with what other tests to find out what caused her to get this horrible infection.
Hi thanks for asking question. In encephalitis Chat Doctor. You have rule out possible viral causes. Is CSF with increased total count and high necrophilia? Then bacterial causes has to be ruled out by gram stain and culture. If you are immunocompromised then fungal infection also has to be ruled out by culture. If you have long term fever with weight loss then also tuberculosis ruled out.Meanwhile, take rest. Maintain HY