In this new series of the Practical Neurology podcast, Professor Martin Turner (1) invites Dr Ruth Wood (2) and Dr Xin You Tai (3) to discuss the nitty-gritty details of two Case Reports from the latest issue of the Practical Neurology journal. This month, they start by commenting on a case of a woman in her 70s with renal failure who developed confusion and seizures after receiving aciclovir, and was subsequently diagnosed with aciclovir-induced neurotoxicity (Aciclovir-induced neurotoxicity - https://pn.bmj.com/content/23/2/157). They also talk (starting at 23:05) about an unusual case of an acute posterior spinal artery syndrome in a man in his 60s with vascular risk factors (Posterior spinal artery infarct - https://pn.bmj.com/content/23/2/160). (1) Professor of Clinical Neurology and Neuroscience at the Nuffield Department of Clinical Neurosciences, University of Oxford, and Consultant Neurologist at John Radcliffe Hospital. (2) Neurology Registrar, University Hospitals Sussex. (3) Clinical Academic Fellow, Nuffield Department of Clinical Neurosciences, Oxford University, and Neurology Specialty registrar, Oxford University Hospital. Please subscribe to the Practical Neurology podcast via all podcast platforms, including Apple Podcasts, Google Podcasts, Stitcher and Spotify, to get the latest podcast every month. If you enjoy our podcast, please consider leaving us a review or a comment on the Practical Neurology Podcast iTunes page (https://podcasts.apple.com/gb/podcast/pn-podcast/id942932053). The PN podcast is produced by Letícia Amorim and edited by Brian O'Toole. Thank you for listening.