Auditory hallucinations as a presenting feature of LGi-1 encephalitis

<h3></h3> Leucine-rich glioma-inactivated 1 (LGI1) encephalitis is an autoantibody mediated limbic encephalitis. The clinical features of LGI1 encephalitis are well described and patients typically present with a variable combination of seizures, cognitive disorders, behavioural changes, and hyponatraemia.¹ In addition to the typical features of LGI1 encephalitis, both visual and auditory hallucinations have also been well documented.² However, reports of olfactory hallucinations, in LGI1 encephalitis specifically, are much more limited. We present a case of a 60-year-old man who was referred to the neurology clinic with olfactory hallucinations who was subsequently diagnosed with LGI1 encephalitis. <h3>References</h3> Li W, Wu S, Meng Q, <i>et al.</i> Clinical characteristics and short-term prognosis of LGI1 antibody encephalitis: a retrospective case study. <i>BMC Neurol</i>. 2018;<b>18</b>:96. Wang M, Cao X, Liu Q, Ma W, Guo X, Liu X. Clinical features of limbic encephalitis with LGI1 antibody. <i>Neuropsychiatr Dis Treat</i>. 2017;<b>13</b>:1589–1596.