The World Health Organization (WHO) monitors the spread of diseases globally and maintains a list of diseases with epidemic or pandemic potential. Currently listed diseases include Chikungunya, cholera, Crimean-Congo hemorrhagic fever, Ebola virus disease, Hendra virus infection, influenza, Lassa fever, Marburg virus disease, Neisseria meningitis, MERS-CoV, monkeypox, Nipah virus infection, novel coronavirus (COVID-19), plague, Rift Valley fever, SARS, smallpox, tularemia, yellow fever, and Zika virus disease. The associated pathogens are increasingly important on the global stage. The majority of these diseases have neurological manifestations. Those with less frequent neurological manifestations may also have important consequences. This is highlighted now in particular through the ongoing COVID-19 pandemic and reinforces that pathogens with the potential to spread rapidly and widely, in spite of concerted global efforts, may affect the nervous system. We searched the scientific literature, dating from 1934 to August 2020, to compile data on the cause, epidemiology, clinical presentation, neuroimaging features, and treatment of each of the diseases of epidemic or pandemic potential as viewed through a neurologist's lens. We included articles with an abstract or full text in English in this topical and scoping review. Diseases with epidemic and pandemic potential can be spread directly from human to human, animal to human, via mosquitoes or other insects, or via environmental contamination. Manifestations include central neurologic conditions (meningitis, encephalitis, intraparenchymal hemorrhage, seizures), peripheral and cranial nerve syndromes (sensory neuropathy, sensorineural hearing loss, ophthalmoplegia), post-infectious syndromes (acute inflammatory polyneuropathy), and congenital syndromes (fetal microcephaly), among others. Some diseases have not been well-characterized from a neurological standpoint, but all have at least scattered case reports of neurological features. Some of the diseases have curative treatments available while in other cases, supportive care remains the only management option. Regardless of the pathogen, prompt, and aggressive measures to control the spread of these agents are the most important factors in lowering the overall morbidity and mortality they can cause.
Enuresis, or "bedwetting," in children is associated with obstructive sleep apnea (OSA), and often resolves with treatment of OSA. However, it is poorly understood whether a similar relationship exists in adults. We describe a case series of 5 adult patients in whom OSA was diagnosed by laboratory polysomnography, who presented with enuresis that resolved after treatment with continuous positive airway pressure (CPAP). All cases occurred in the setting of obesity, in addition to other known risk factors for urinary incontinence and enuresis. OSA was diagnosed as severe in all but one case, which was mild. One patient noted recurrence of enuresis that coincided with malfunction of his CPAP machine. There is growing evidence that CPAP therapy may alleviate OSA and enuresis in adults with both conditions. Clinicians should routinely ask about enuresis in patients suspected of having OSA. A systematic study of the association between enuresis and OSA in adults is warranted.
Brachial plexopathy is a common consideration in the differential diagnosis of upper extremity sensory and motor deficits, and neoplasms signify one possible etiology of brachial plexopathy. Of the neoplastic brachial plexopathies, hemangiomas involving the brachial plexus are rare. Most reported cases describe extraneural brachial plexus hemangiomas that present as a palpable, tender neck mass associated with pain and sensory disturbance, with minimal motor deficits. Here we share the case of a 48 year-old man with intraneural epithelioid hemangioma of the brachial plexus who presented with prominent motor weakness and no palpable mass. The patient presented with subacute onset of left arm pain, numbness and progressive weakness. Neurologic exam revealed lower motor neuron signs and weakness spanning multiple nerve root and peripheral nerve distributions. Dedicated brachial plexus MRI showed two mass lesions involving the cords of the brachial plexus, with corresponding FDG-avidity on PET/CT. Biopsy revealed intraneural atypical epithelioid hemangioma. After nerve transfer surgery, he had moderate improvement in left arm strength. This case serves to: emphasize the importance of both clinical localization and dedicated brachial plexus imaging in the evaluation of brachial plexopathy; introduce to the literature a new clinical presentation of brachial plexus hemangiomas; encourage consideration of neoplastic brachial plexopathy even when faced with an illness script resembling Parsonage-Turner Syndrome, to avoid delays in diagnosis and treatment.
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