<unk>  history with focus on time of ingestion and symptom onset
CSF studies
Pleiocytosis (primarily neutrophilic)
Elevated protein levels
Normal glucose
Negative cultures
Challenge test with suspected<unk> 
Only confirmatory test
Requires informed written consent
Due to associated risk, should only be done if suspected<unk>  is irreplaceable
Pleiocytosis (primarily neutrophilic)
Elevated protein levels
Normal glucose
Negative cultures
Only confirmatory test
Requires informed written consent
Due to associated risk, should only be done if suspected<unk>  is irreplaceable
Drug induced aseptic meningitis
Migraine headache
Neoplastic meningitis
Tension headache
Primary Amebic Meningoencephalitis
Cluster headache
Limbic encephalitis
Meningitis/encephalitis