RT Journal Article SR Electronic T1 IgG4-related disease: a rare but treatable cause of refractory intracranial hypertension JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP 235 OP 239 DO 10.1136/practneurol-2015-001275 VO 16 IS 3 A1 Thomas Williams A1 Monica Marta A1 Gavin Giovannoni YR 2016 UL http://pn.bmj.com/content/16/3/235.abstract AB Hypertrophic pachymeningitis secondary to IgG4-related disease is a rare but sometimes devastating cause of intracranial hypertension. It has the potential for an excellent response to corticosteroids or rituximab. We discuss the clinical presentation, imaging, histology (with its difficult distinction from lymphoma), management and follow-up of a case, including relapse and re-treatment following an initial response to rituximab.