| PACE | Patient graded activity and cognitive behavior therapy |
| IDSA | Infectious Disease Society of America |
| MUS | Medically Unexplained Symptoms |
| APA | American Psychiatric Association |
| DSM-5 | Diagnostic and Statistical Manual of Mental Disorders, 5th Edition |
| ICD | International Classification of Diseases |
| ALPIM | Anxiety-laxity-pain-immune-mood |
| DSM-IV-TR | Diagnostic and Statistical Manual, Fourth Edition, Text Revision |
| ME/CFS | Myalgic encephalomyelitis/chronic fatigue syndrome |
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