Neurologic presentations in children with COVID-19 infection are rare. Reports of pediatric multi-inflammatory syndrome have dominated the literature, although cases pure neurologic manifestations been described.1–3 Akinetic mutism has previously reported steroid-responsive COVID-19-related encephalitis.4 We present case a 16-year-old girl who presented visual hallucinations and ritualistic beh...

Hyponatremia is a relatively common electrolyte disorder. Although severe acute hyponatremia following coronary angiography is rare, potentially lethal neurologic manifestations may result. We describe a patient with severe, symptomatic hyponatremia, an unusual complication of coronary angiography. Lack of familiarity with contrast media-related hyponatremia caused a delay in diagnosis and ther...

BACKGROUND Reported influenza-associated neurologic complications are generally limited to case series or case reports. We conducted a population-based study of neurologic manifestations associated with severe and fatal influenza A(H1N1)pdm09 (2009 H1N1) cases. METHODS Medical records of patients with fatal or severe (hospitalized in intensive care unit) laboratory-confirmed 2009 H1N1 reporte...

Thymoma is a rare tumor that commonly associated with autoimmune diseases. Of these, myasthenia gravis (MG) widely considered as the most common paraneoplastic condition. On other hand, dermatomyositis (DM) has been rarely reported first presentation of non-invasive thymoma. Hereby, we describe patient thymoma who initially presented painful symmetric proximal muscle weakness no signs ptosis or...

BACKGROUND The spectrum of neurologic disease attributable to Mycoplasma pneumoniae in children is incompletely understood in part because of limitations of microbiologic diagnostic methods. Our objective was to characterize the neurologic complications of M. pneumoniae in children using stringent diagnostic criteria. METHODS All children admitted to the Hospital for Sick Children over a 16-y...