MPS-specific physical symptom scale introduced a Physical Symptom Score (PSS) by quantifying the somatic disease burden
PSS was significantly positively associated with age in attenuated MPS I, MPS II and MPS VI
PSS was significantly negatively associated with Full Scale IQ (FSIQ) in attenuated MPS I and in MPS VI
PSS was not statistically significantly associated with FSIQ in MPS II, but had similar direction as other two groups
• There were no previous studies that examined the association of PSS in MPS disorders with neuropsychological functions