| Reduced melatonin amplitude | PSP patients show significantly lower nocturnal melatonin levels compared to healthy controls[@mishima1999] |
| Phase advance | Melatonin onset occurs earlier in PSP patients, contributing to early-morning awakenings |
| Blunted rhythms | The normally sharp nocturnal rise in melatonin is dampened or absent in advanced disease |
| Databases | OMIMOrphanetClinicalTrialsPubMed |