NeurohospitalistPub Date : 2025-06-02DOI: 10.1177/19418744251347781
Thomas J Pisano, Brandon Merical, Zehui Wang, Joshua M Levine
{"title":"Rebound Hyperkalemia in Hypokalemic Thyrotoxic Periodic Paralysis.","authors":"Thomas J Pisano, Brandon Merical, Zehui Wang, Joshua M Levine","doi":"10.1177/19418744251347781","DOIUrl":"10.1177/19418744251347781","url":null,"abstract":"<p><p><b>Background:</b> Thyrotoxic periodic paralysis (TPP) is a rare, life-threatening, reversible condition, in which episodic muscle weakness occurs due to low serum potassium in the setting of thyrotoxicosis. In addition to treating thyrotoxicosis, prompt restoration of potassium levels is essential while monitoring for rebound hyperkalemia. <b>Purpose:</b> To emphasize the importance of recognizing and appropriately managing TPP, with a focus on the potential dangers of potassium overcorrection. <b>Case Report:</b> We present a patient with TPP whose potassium replacement therapy caused dangerous hyperkalemia, requiring aggressive potassium shifting and wasting therapies and vasopressor support. <b>Conclusions:</b> This case report highlights the importance of prompt recognition and treatment of TPP as well as the need for careful management of potassium levels to prevent respiratory failure and cardiac arrhythmias. We discuss the challenges associated with potassium repletion in thyrotoxicosis including the importance of careful monitoring and titration of potassium replacement therapy to avoid overcorrection and hyperkalemia.</p>","PeriodicalId":46355,"journal":{"name":"Neurohospitalist","volume":" ","pages":"19418744251347781"},"PeriodicalIF":0.9,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12129952/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144227177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeurohospitalistPub Date : 2025-05-27DOI: 10.1177/19418744251346288
Hannah Padilla, Rafid Mustafa
{"title":"Herpez Zoster Radiculitis.","authors":"Hannah Padilla, Rafid Mustafa","doi":"10.1177/19418744251346288","DOIUrl":"10.1177/19418744251346288","url":null,"abstract":"<p><p>This article highlights herpes zoster radiculitis, a condition that predominantly affects elderly patients and classically presents with progressive limb weakness, pain, and vesicular rash. Neuroimaging with MRI may demonstrate nerve root enlargement with T2-hyperintensity and gadolinium enhancement. Diagnosis can be confirmed with varicella zoster virus PCR in CSF. Effective treatment includes IV acyclovir and neuropathic pain agents such as gabapentin, which together can lead to symptomatic improvement. Early diagnosis and comprehensive treatment are crucial to prevent complications. Patients with zoster-associated plexopathy have a higher incidence of postherpetic neuralgia compared to those with herpes zoster rash alone. Thus, multimodal treatment involving antivirals, rehabilitation, and pain management is essential for recovery.</p>","PeriodicalId":46355,"journal":{"name":"Neurohospitalist","volume":" ","pages":"19418744251346288"},"PeriodicalIF":0.9,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12119523/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144200414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeurohospitalistPub Date : 2025-05-23DOI: 10.1177/19418744251343174
Connor M Tierney, Marinos Kontzialis
{"title":"Glioblastoma Mimicking Autoimmune Encephalitis.","authors":"Connor M Tierney, Marinos Kontzialis","doi":"10.1177/19418744251343174","DOIUrl":"10.1177/19418744251343174","url":null,"abstract":"<p><p>A 66-year-old female patient presented with progressive short-term memory loss over a period of three months and mild gait imbalance. MRI of the brain demonstrated symmetric expansile T2 FLAIR hyperintensities within the bilateral mesial temporal lobes, thalami, and cingulate gyri (Figure 1). Due to the symmetry of the signal changes in the bilateral cerebral hemispheres and especially the mesial temporal lobes, an autoimmune encephalitis was strongly favored on imaging. Glioblastoma was a consideration on the initial scan; however, it was thought to be much less likely, and the patient received immunosuppression with plasmapheresis and IV steroids. At that time, it was even presumed that the patient improved mildly with plasmapheresis. The patient was discharged on PO steroids; however, a few weeks later the patient presented in status epilepticus. On repeat MRI brain, findings were not significantly changed, and the diagnosis of an autoimmune process was again favored on imaging. The patient received plasmapheresis and IV steroids. However, on the second admission the patient's neurologic function was markedly below baseline per the family's report. The patient had received an extensive autoimmune, infectious and metabolic work up, including testing for Creutzfeldt-Jacob disease, with all the tests coming back negative. Therefore, a brain biopsy was performed to understand the underlying pathology, IDH wild-type glioblastoma. On MRI, the expansile signal changes were bilateral and multifocal, affecting more than three cerebral lobes. This is a case of gliomatosis cerebri, which was misdiagnosed as autoimmune encephalitis due to the symmetry of cerebral involvement.</p>","PeriodicalId":46355,"journal":{"name":"Neurohospitalist","volume":" ","pages":"19418744251343174"},"PeriodicalIF":0.9,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12102076/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144143994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeurohospitalistPub Date : 2025-05-21DOI: 10.1177/19418744251345025
Riya Sharma, Siddharth Chand, Manoj Kumar Goyal, Ritu Shree
{"title":"Horner's Syndrome and Mediastinal Schwannoma.","authors":"Riya Sharma, Siddharth Chand, Manoj Kumar Goyal, Ritu Shree","doi":"10.1177/19418744251345025","DOIUrl":"10.1177/19418744251345025","url":null,"abstract":"<p><p>A 13-year-old boy developed right-sided Horner's syndrome following resection of a benign mediastinal schwannoma extending from T1 to T3. Postoperatively, he exhibited ptosis, miosis, and anhidrosis, confirmed by starch iodine testing. The tumor likely involved the upper thoracic sympathetic ganglia-a rare site for schwannomas. This image highlights a rare iatrogenic cause of preganglionic Horner's syndrome. While Horner's is classically associated with apical lung or cervical lesions, this case emphasizes the importance of recognizing postoperative Horner's syndrome as a clinical clue to cervicothoracic sympathetic injury. It highlights the value of anatomical-clinical correlation in localizing lesions along the sympathetic pathway.</p>","PeriodicalId":46355,"journal":{"name":"Neurohospitalist","volume":" ","pages":"19418744251345025"},"PeriodicalIF":0.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12095197/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144143998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeurohospitalistPub Date : 2025-05-19DOI: 10.1177/19418744251342295
Carolina Cunha, Pedro Faustino, Inês Carvalho, Ana Morgadinho, Rosário Cunha, Diogo Reis-Carneiro
{"title":"Ataxia-Parkinsonism in a Patient With Double-Positive Anti-Hu and Anti-NMDAR Antibodies.","authors":"Carolina Cunha, Pedro Faustino, Inês Carvalho, Ana Morgadinho, Rosário Cunha, Diogo Reis-Carneiro","doi":"10.1177/19418744251342295","DOIUrl":"10.1177/19418744251342295","url":null,"abstract":"<p><p>Movement disorders may be a core feature of autoimmune brain disorders, including paraneoplastic neurological syndromes. A 73-year-old white male presents with memory impairment, gait instability, dysphagia, and severe dysarthria progressing over 1.5 years. He recently developed behavior and sleep disturbances. His cognitive assessment showed time disorientation, short-term memory impairment with preserved retrieval, and pseudobulbar affect. The remainder of the neurological exam showed seborrhea, facio-cervical dystonia, a right positive palmomental reflex, fragmented pursuit eye movements, dysarthria, minor right pyramidal signs, bilateral asymmetric limb ataxia and symmetric akinetic parkinsonism. He was wheelchair-bound, capable of only a few short steps with help. MRI depicted generalized cortico-subcortical atrophy with temporal predominance. He was positive for antibodies anti-Hu in serum (1:10 000) and CSF (1:100), as antibodies anti-NMDAR in serum (1:320) and CSF (1:10). The patient had no clinical improvement after a therapeutical trial with 1 g intravenous methylprednisolone. Additional workup for occult neoplasia was positive for prostatic adenocarcinoma. He remains stable 2.5 years after disease onset.</p>","PeriodicalId":46355,"journal":{"name":"Neurohospitalist","volume":" ","pages":"19418744251342295"},"PeriodicalIF":0.9,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12093354/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144129052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Early Neurological Deterioration in Ischemic Stroke: Prevalence, Predictors, Causes and 90-day Outcome in a Retrospective Tunisian Cohort.","authors":"Narjes Gouta, Nizar Daoussi, Rihab Ben Dhia, Yasmine Saad, Mariem Mhiri, Mahbouba Frih-Ayed","doi":"10.1177/19418744251341922","DOIUrl":"10.1177/19418744251341922","url":null,"abstract":"<p><strong>Introduction: </strong>Early neurological deterioration (END) in ischemic stroke (IS) patients is a common complication that significantly impacts functional and vital prognoses. We aimed to determine the prevalence, predictors, and 90-day outcomes of END in Tunisian stroke patients.</p><p><strong>Materials and methods: </strong>This was a retrospective cohort study of consecutive stroke cases admitted at the Neurology Department of the University Hospital in Monastir over 5 years, from 2018 to 2022. We included patients with an increment of two or more points on the NIHSS score within the first 7 days following IS. Univariate analysis and binary logistic regression were performed to identify independent factors associated with END.</p><p><strong>Results: </strong>We included 489 patients with a mean age of 64 years (24 to 90) and a male predominance (sex ratio M/F = 1.86). The prevalence of END was 12.06% (59/489 patients). An elevated initial NIHSS score (OR = 1.13; 95% CI = 1.05-1.21), anterior choroidal artery stroke (OR = 5.39; 95% CI = 1.99-14.55), and large artery atherosclerosis (OR = 2.85; 95% CI = 1.17-6.9), were found to be independent factors associated with END. The causes of END included IS recurrence (12%), hemorrhagic transformation (10%), brain edema (10%), and stroke progression (68%). At 90 days, 80.8% (<i>P</i> < 0.001) of patients who experienced END had a mRS score of 2 or more, with a mortality rate of 18.6% (<i>P</i> < 0.001).</p><p><strong>Conclusion: </strong>Patients with elevated NIHSS scores, AChA strokes, or LAA, should be prioritized for close observation during the acute phase. Enhancing our understanding of the predictive factors of END following IS could help target patients at very high risk of END and facilitate the development of more effective and rigorous strategies for prevention and treatment.</p>","PeriodicalId":46355,"journal":{"name":"Neurohospitalist","volume":" ","pages":"19418744251341922"},"PeriodicalIF":0.9,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12078254/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144095295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeurohospitalistPub Date : 2025-05-13DOI: 10.1177/19418744251343999
Dylan Ryan, Vincent Chang, Aya Ouf
{"title":"Utilization of DWI-FLAIR Mismatch for Intravenous Thrombolysis in an Elderly Patient With Stroke.","authors":"Dylan Ryan, Vincent Chang, Aya Ouf","doi":"10.1177/19418744251343999","DOIUrl":"https://doi.org/10.1177/19418744251343999","url":null,"abstract":"<p><strong>Objectives: </strong>To discuss utility of using DWI-FLAIR mismatch in select patients not included in the original WAKE-UP trial for administration of IV thrombolytics.</p><p><strong>Methods: </strong>We identified a female over 100 years old who presented with stroke symptoms upon waking up. This case is selected due to its unique management. Relevant clinical data was collected through a review of the patient's medical records. All data were anonymized to ensure confidentiality.</p><p><strong>Results: </strong>A 102-year-old female with a complex past medical history of atrial fibrillation, not on anticoagulation presented with a National Institutes of Health Stroke Scale (NIHSS) of 23. Stroke symptoms were present upon awakening. Noncontrast computed tomography (CT) of the head was negative for hemorrhage or early ischemic changes. CT angiography (CTA) of the head and neck was notable for a distal right M2 occlusion. A hyperacute magnetic resonance imaging (MRI) of the brain was pursued to determine potential eligibility for intravenous thrombolysis (IVT). Patient consented to IVT. NIHSS improved to 13. She was eventually discharged to a skilled nursing facility.</p><p><strong>Discussion: </strong>We aimed to highlight the oldest known case of IV thrombolysis in this patient presenting with a stroke upon awakening. This is to emphasize possible benefit in cases not included in the original WAKE-UP trial.</p>","PeriodicalId":46355,"journal":{"name":"Neurohospitalist","volume":" ","pages":"19418744251343999"},"PeriodicalIF":0.9,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12075155/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeurohospitalistPub Date : 2025-05-12DOI: 10.1177/19418744251336501
Janet A Montelongo, Carley A Ellis, Jennifer J Cheng, Timothy A Fields, Daffolyn Rachael Fels Elliott, Abid Y Qureshi
{"title":"A 51-Year-Old Woman With Subarachnoid Hemorrhage and Secondary Central Nervous System Vasculitis With Progression to Diffuse, Serpiginous Dolichoectasia.","authors":"Janet A Montelongo, Carley A Ellis, Jennifer J Cheng, Timothy A Fields, Daffolyn Rachael Fels Elliott, Abid Y Qureshi","doi":"10.1177/19418744251336501","DOIUrl":"https://doi.org/10.1177/19418744251336501","url":null,"abstract":"<p><p>A 51-year-old woman presented with acute onset of a severe headache, and was found to have diffuse subarachnoid hemorrhage with prominent cisternal and left cortical convexity blood on head computed tomography. The first 2 conventional angiograms were negative for aneurysm, but a third angiogram revealed a mycotic aneurysm of a distal left middle cerebral artery branch. Brain biopsy, associated with clipping of the aneurysm, demonstrated pathology consistent with vasculitis. Over the course of a month, she developed diffuse, serpiginous dolichoectasia of the cerebral arteries. Further investigation into the cause of vasculitis supported a diagnosis of either eosinophilic granulomatosis with polyangiitis (EGPA) or IgG4-Related Disease (IgG4-RD). The following clinical pathologic conference discusses the diagnostic challenges in discriminating between these 2 diseases, particularly in the setting of secondary angiitis of the central nervous system.</p>","PeriodicalId":46355,"journal":{"name":"Neurohospitalist","volume":" ","pages":"19418744251336501"},"PeriodicalIF":0.9,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12075185/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeurohospitalistPub Date : 2025-05-09DOI: 10.1177/19418744251342108
Josef Finsterer
{"title":"Axonal Neuropathy in Hepatic Porphyria Should Not be Confused With Guillain-Barre Syndrome.","authors":"Josef Finsterer","doi":"10.1177/19418744251342108","DOIUrl":"https://doi.org/10.1177/19418744251342108","url":null,"abstract":"","PeriodicalId":46355,"journal":{"name":"Neurohospitalist","volume":" ","pages":"19418744251342108"},"PeriodicalIF":0.9,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12064565/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144040924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeurohospitalistPub Date : 2025-05-08DOI: 10.1177/19418744251342109
Ashok Kumar Pannu
{"title":"Acute Hepatic Porphyria vs. Guillain-Barré Syndrome: Response to \"Axonal Neuropathy in Hepatic Porphyria Should Not be Confused With Guillain-Barre Syndrome\".","authors":"Ashok Kumar Pannu","doi":"10.1177/19418744251342109","DOIUrl":"https://doi.org/10.1177/19418744251342109","url":null,"abstract":"","PeriodicalId":46355,"journal":{"name":"Neurohospitalist","volume":" ","pages":"19418744251342109"},"PeriodicalIF":0.9,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12064567/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144001213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}