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1 Possible Causes for Lumbar Paraspinal Rigidity Causes Exaggerated Lumbar Lordosis

  • Stiff-Person Syndrome

    Stiff person syndrome (SPS), stiff limb syndrome, jerking SPS and progressive encephalomyelitis with rigidity and myoclonus (PERM) are a family of rare, insidiously progressive diseases of the central nervous system. They all share the core clinical features of appendicular and axial rigidity caused by continuous[…][ncbi.nlm.nih.gov]

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