RT Journal Article SR Electronic T1 Clinical and magnetic resonance study of a case of subacute sclerosing panencephalitis treated with ketogenic diet JF BMJ Neurology Open JO BMJ Neurol Open FD BMJ Publishing Group Ltd SP e000176 DO 10.1136/bmjno-2021-000176 VO 3 IS 2 A1 Mariarosaria Valente A1 Ilaria Del Negro A1 Daniele Bagatto A1 Riccardo Garbo A1 Christian Lettieri A1 Andrea Bernardini A1 Annacarmen Nilo A1 Maria Rosaria Peri A1 Davide Pecori A1 Gian Luigi Gigli YR 2021 UL http://neurologyopen.bmj.com/content/3/2/e000176.abstract AB Background Subacute sclerosing panencephalitis is a progressive neurodegenerative disorder caused by a latent and mutant measles virus which is extremely rare in developed countries. The lack of effective treatments leads to the research of other anti-inflammatory and neuroprotective treatments.Case Here we present a case of a 17-year-old patient affected by subacute sclerosing panencephalitis who manifest a dramatic improvement in neurological and general clinical conditions, as well as an arrest in the progression of demyelinating process in the central nervous system, after the beginning of a high ratio ketogenic diet.Conclusions Given its anti-inflammatory, antioxidant and metabolic effects, we believe that ketogenic diet utilisation could be a rational approach, can be considered a safe add-on therapy, carrying on with only a minimal risk of adverse effects or interactions.The data that support the findings of this short report are available on request from the corresponding author (IDN).