| Bb | Borrelia burgdorferi |
| Bbsl | Borrelia burgdorferi sensu lato |
| CDC | Centers for Disease Control |
| CLD | Chronic Lyme disease |
| CLD-U | Chronic Lyme disease, untreated |
| CLD-PT | Chronic Lyme disease, previously treated |
| CLD-T | chronic Lyme disease, treated |
| CSF | cerebrospinal fluid |
| EM | erythema migrans |
| DNA | deoxyribonucleic acid |
| HEENT | head, ears, eyes, nose and throat |
| IgM | immunoglobulin M |
| IgG | immunoglobulin G |
| ILADS | International Lyme and Associated Diseases Society |
| OSP | outer surface protein |
| PCR | polymerase chain reaction |
| PLDS | Post Lyme disease Syndrome |
| PTLDS | Post-Treatment Lyme disease Syndrome |
| QoL | Quality of Life |
| TBD | tick-borne disease |