CSF to distinguish between chronic fatigue & Lyme

Link: http://www.ncbi.nlm.nih.gov/pubmed?term=Distinct%20cerebrospinal%20fluid%20proteomes%20differentiate%20post-treatment%20lyme%20disease%20from%20chronic%20fatigue%20syndrome

Excerpt:

Distinguishing nPTLS and CFS 
permits more focused study of each condition, and can lead to novel 
diagnostics and therapeutic interventions.