<prompt> Answer this question truthfullyWhat is the PAIR mnemonic used for in relation to spondyloarthropathies associated with HLA-B27?  <response>: <reason> The PAIR mnemonic is used to remember the spondyloarthropathies associated with HLA-B27. PAIR stands for: P - Psoriasis, A - Ankylosing spondylitis, I - Inflammatory bowel disease, and R - Reactive arthritis. 