Welcome to the fourteenth episode in the "What we've learnt this week..." series. These are short 15 minute or so podcasts where we discuss topics we have encountered in the preceding weeks; whether it be on the wards, in a journal, at teaching or even on Twitter! Join Christina, Dilani, Emma and Hannah this week as they discuss an unusual cause of medication related hypernatraemia, CT head scans as part of delirium work up, FRAX and progressive supranuclear palsy.  Useful links this week:  FRAX: https://www.sheffield.ac.uk/FRAX/ Sign Guideline 157: https://www.sign.ac.uk/media/1423/sign157.pdf PSP Association: https://pspassociation.org.uk/information-and-support/what-is-psp/