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Said R Beydoun, MD

Title(s)Professor of Clinical Neurology
AddressHCT 3000
Health Sciences Campus
Los Angeles CA 90089-9405
Phone+1 323 442 6085
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    Other Positions
    Title(s)Richard Angus Grant, Sr., Chair in Neurology

    Title(s)Program Director, Clinical Neurophysiology Fellowship

    Title(s)Division Chief, Neuromuscular Disorders


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    Dr. Beydoun is a nationally-recognized neurologist who advocates an integrated approach to clinical diagnosis, neurophysiologic testing, and treatment options for patients with neuromuscular diseases. Dr. Beydoun is director of the USC Neuromuscular Division. He leads the ACGME-accredited Clinical Neurophysiology Fellowship, which trains three physicians each year. As a principal investigator, Dr. Beydoun has participated in various research clinical trials. His clinical and research areas of expertise are in the fields of ALS, neuropathy, diabetic neuropathies, neuropathic pain and immune-mediated neuromuscular disorders, such as CIDP, Multifocal Motor Neuropathy and Myasthenia Gravis. He has been published in several scientific journals on topics related to neuromuscular diseases and neuropathies. He serves as Editor-in-Chief of US Neurology. He is a fellow of the American Academy of Neurology and a fellow of the American Association of Neuromuscular and Electrodiagnostic Medicine. He is a member of the advisory board and the scientific committee of the Myasthenia Gravis Foundation of California. He holds board certification by the American Board of Psychiatry and Neurology in Neurology, Clinical Neurophysiology, Pain Medicine, and Neuromuscular Medicine. He is also certified by the American Board of Electrodiagnostic Medicine.

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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Spinal Muscular Atrophy, Two Case Reports of Compound Heterozygosity. US Neurology. 2019; 2(15):97-99. View Publication.
    2. Randomized phase 2 study of FcRn antagonist efgartigimod in generalized myasthenia gravis. Neurology. 2019 06 04; 92(23):e2661-e2673. Howard JF, Bril V, Burns TM, Mantegazza R, Bilinska M, Szczudlik A, Beydoun S, Garrido FJRR, Piehl F, Rottoli M, Van Damme P, Vu T, Evoli A, Freimer M, Mozaffar T, Ward ES, Dreier T, Ulrichts P, Verschueren K, Guglietta A, de Haard H, Leupin N, Verschuuren JJGM. PMID: 31118245.
      View in: PubMed   Mentions: 4     Fields:    Translation:HumansCTClinical Trials
    3. Long-term effect of thymectomy plus prednisone versus prednisone alone in patients with non-thymomatous myasthenia gravis: 2-year extension of the MGTX randomised trial. Lancet Neurol. 2019 03; 18(3):259-268. Wolfe GI, Kaminski HJ, Aban IB, Minisman G, Kuo HC, Marx A, Ströbel P, Mazia C, Oger J, Cea JG, Heckmann JM, Evoli A, Nix W, Ciafaloni E, Antonini G, Witoonpanich R, King JO, Beydoun SR, Chalk CH, Barboi AC, Amato AA, Shaibani AI, Katirji B, Lecky BRF, Buckley C, Vincent A, Dias-Tosta E, Yoshikawa H, Waddington-Cruz M, Pulley MT, Rivner MH, Kostera-Pruszczyk A, Pascuzzi RM, Jackson CE, Verschuuren JJGM, Massey JM, Kissel JT, Werneck LC, Benatar M, Barohn RJ, Tandan R, Mozaffar T, Silvestri NJ, Conwit R, Sonett JR, Jaretzki A, Newsom-Davis J, Cutter GR. PMID: 30692052.
      View in: PubMed   Mentions: 4     Fields:    Translation:HumansCTClinical Trials
    4. Late Onset Hereditary Transthyretin Amyloidosis Polyneuropathy in Two Patients with Acquired Demyelinating Features. US Neurology. 2018; 2(14):98-101. View Publication.
    5. The Challenges of Distinguishing POEMS from Chronic Inflammatory Demyelinating Polyneuropathy (CIDP). Importance of Early Recognition and Diagnosis of POEMS. US Neurology. 2018; 2(14). View Publication.
    6. Edaravone in Amyotrophic Lateral Sclerosis-Lessons from the Clinical Development Program and the Importance of a Strategic Clinical Design. US Neurology. 2018; 1(14):47-53. View Publication.
    7. Delayed Appearance of Conduction Block in Multifocal Motor Neuropathy. US Neurology. 2017; 2(13):99-102. View Publication.
    8. Utility of Neurological Imaging in Sensory Variant of Chronic Inflammatory Demyelinating Polyneuropathy: A Case Report. J Clin Neuromuscul Dis. 2017 Mar; 18(3):157-159. Gevorgyan AG, Shah A, Beydoun SR. PMID: 28221307.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    9. Chronic Inflammatory Demyelinating Polyradiculoneuropathy 101—Pitfalls and Pearls of Diagnosis and Treatment. US Neurology. 2017; 13(1):26-34. View Publication.
    10. Randomized Trial of Thymectomy in Myasthenia Gravis. N Engl J Med. 2016 08 11; 375(6):511-22. Wolfe GI, Kaminski HJ, Aban IB, Minisman G, Kuo HC, Marx A, Ströbel P, Mazia C, Oger J, Cea JG, Heckmann JM, Evoli A, Nix W, Ciafaloni E, Antonini G, Witoonpanich R, King JO, Beydoun SR, Chalk CH, Barboi AC, Amato AA, Shaibani AI, Katirji B, Lecky BR, Buckley C, Vincent A, Dias-Tosta E, Yoshikawa H, Waddington-Cruz M, Pulley MT, Rivner MH, Kostera-Pruszczyk A, Pascuzzi RM, Jackson CE, Garcia Ramos GS, Verschuuren JJ, Massey JM, Kissel JT, Werneck LC, Benatar M, Barohn RJ, Tandan R, Mozaffar T, Conwit R, Odenkirchen J, Sonett JR, Jaretzki A, Newsom-Davis J, Cutter GR. PMID: 27509100.
      View in: PubMed   Mentions: 73     Fields:    Translation:Humans
    11. When to write a neurology case report. J Med Case Rep. 2016 Apr 06; 10:92. Rison RA, Shepphird JK, Beydoun SR. PMID: 27048244.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    12. Disulfiram neuropathy: two case reports. J Med Case Rep. 2016 Mar 31; 10:72. Tran AT, Rison RA, Beydoun SR. PMID: 27029711.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    13. Different Presentations of Myelopathy—A Case Series. US Neurology. 2016; 12(1):22-26. View Publication.
    14. Paraproteinemic neuropathy: a practical review. BMC Neurol. 2016 Jan 28; 16:13. Rison RA, Beydoun SR. PMID: 26821540.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    15. Chronic Inflammatory Demyelinating Polyneuropathy Manifesting as Neuropathy With Liability to Pressure Palsies: A Case Report. J Clin Neuromuscul Dis. 2015 Dec; 17(2):78-83. Shah A, Rison RA, Beydoun SR. PMID: 26583495.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    16. Misdiagnosis of inclusion body myositis: two case reports and a retrospective chart review. J Med Case Rep. 2015 Aug 13; 9:169. Chilingaryan A, Rison RA, Beydoun SR. PMID: 26268316.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    17. Differentiating Multifocal Motor Neuropathy from Entrapment Neuropathy – A Diagnostic Challenge. US Neurology. 2015; 12(1):17-21. View Publication.
    18. Chiari malformation type I with cervicothoracic syringomyelia masquerading as bibrachial amyotrophy: a case report. J Med Case Rep. 2015 Jan 27; 9:11. Mora JR, Rison RA, Beydoun SR. PMID: 25622641.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    19. Myasthenia gravis associated with invasive malignant thymoma: two case reports and a review of the literature. J Med Case Rep. 2014 Oct 13; 8:340. Beydoun SR, Gong H, Ashikian N, Rison RA. PMID: 25312448.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    20. A controlled trial of intravenous immunoglobulin in multifocal motor neuropathy. J Peripher Nerv Syst. 2013 Dec; 18(4):321-30. Hahn AF, Beydoun SR, Lawson V, Oh M, Empson VG, Leibl H, Ngo LY, Gelmont D, Koski CL. PMID: 24725024.
      View in: PubMed   Mentions: 16     Fields:    Translation:HumansCTClinical Trials
    21. Kennedy disease misdiagnosed as polymyositis: a case report. BMC Res Notes. 2013 Sep 28; 6:389. Harutunian GM, Beydoun SR, Rison RA. PMID: 24073646.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    22. Hereditary neuropathy with liability to pressure palsy: two cases of difficult diagnosis. J Clin Neuromuscul Dis. 2013 Sep; 15(1):28-33. Beydoun SR, Cho J. PMID: 23965407.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    23. Cervicothoracic spinal cord and pontomedullary injury secondary to high-voltage electrocution: a case report. J Med Case Rep. 2012 Sep 13; 6:296. Johl HK, Olshansky A, Beydoun SR, Rison RA. PMID: 22974044.
      View in: PubMed   Mentions: 2     Fields:    
    24. Clinical and imaging findings in three patients with advanced inflammatory demyelinating polyradiculoneuropathy associated with nerve root hypertrophy. J Clin Neuromuscul Dis. 2012 Mar; 13(3):105-12. Beydoun SR, Muir J, Apelian RG, Go JL, Lin FP. PMID: 22538304.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    25. Bilateral phrenic neuropathies in a diabetic patient responsive to intravenous immunoglobulin: a case report. Clin Neurol Neurosurg. 2011 Nov; 113(9):788-91. Rison RA, Beydoun SR. PMID: 21906870.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    26. Delayed cervicobulbar neuronopathy and myokymia after head and neck radiotherapy for nasopharyngeal carcinoma: a case report. J Clin Neuromuscul Dis. 2011 Mar; 12(3):147-52. Rison RA, Beydoun SR. PMID: 21321494.
      View in: PubMed   Mentions: 2     Fields:    Translation:HumansPHPublic Health
    27. Emotional stress as a trigger of myasthenic crisis and concomitant takotsubo cardiomyopathy: a case report. J Med Case Rep. 2010 Dec 03; 4:393. Beydoun SR, Wang J, Levine RL, Farvid A. PMID: 21129175.
      View in: PubMed   Mentions: 11     Fields:    
    28. Amyotrophic lateral sclerosis-motor neuron disease, monoclonal gammopathy, hyperparathyroidism, and B12 deficiency: case report and review of the literature. J Med Case Rep. 2010 Sep 01; 4:298. Rison RA, Beydoun SR. PMID: 20809955.
      View in: PubMed   Mentions: 5     Fields:    
    29. Chronic immune-mediated demyelinating polyneuropathy in the setting of cetuximab treatment. Clin Neurol Neurosurg. 2010 Dec; 112(10):900-2. Beydoun SR, Shatzmiller RA. PMID: 20685033.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    30. Teaching Video NeuroImages: tongue myokymia following head and neck radiotherapy for nasopharyngeal carcinoma. Neurology. 2009 Apr 07; 72(14):e65. Rison RA, Beydoun SR. PMID: 19349595.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    31. Hereditary neuropathy with liability to pressure palsies: description of seven patients without known family history. Acta Neurol Scand. 2008 Apr; 117(4):266-72. Beydoun SR, Sykes SN, Ganguly G, Lee TS. PMID: 17922888.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    32. Long-term safety and tolerability of oxcarbazepine in painful diabetic neuropathy. Acta Neurol Scand. 2007 Apr; 115(4):284-8. Beydoun S, Alarcón F, Mangat S, Wan Y. PMID: 17286624.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    33. Oxcarbazepine in painful diabetic neuropathy: a randomized, placebo-controlled study. Eur J Pain. 2005 Oct; 9(5):543-54. Dogra S, Beydoun S, Mazzola J, Hopwood M, Wan Y. PMID: 16139183.
      View in: PubMed   Mentions: 24     Fields:    Translation:HumansCTClinical Trials
    34. Secondary amyloidosis as a life-ending event in multifocal motor neuropathy. Muscle Nerve. 2001 Oct; 24(10):1396-402. Beydoun SR, Rison RA, Commins D. PMID: 11562923.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    35. Bilateral phrenic neuropathy as a presenting feature of multifocal motor neuropathy with conduction block. Muscle Nerve. 2000 Apr; 23(4):556-9. Beydoun SR, Copeland D. PMID: 10716767.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    36. Generalized myokymia as a unique association with gluten-sensitive enteropathy. Eur Neurol. 2000; 44(4):254-5. Beydoun SR, Copeland DD, Korula J. PMID: 11096230.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    37. Multifocal motor neuropathy with conduction block misdiagnosed as multiple entrapment neuropathies. Muscle Nerve. 1998 Jun; 21(6):813-5. Beydoun SR. PMID: 9585340.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    38. Neuralgic amyotrophy misdiagnosed as diaphragmatic rupture. Muscle Nerve. 1996 Sep; 19(9):1181-2. Beydoun SR, Rodriguez R. PMID: 8761280.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    39. Delayed presentation of a partial palmar ulnar motor neuropathy in a chemist; secondary to a rare "occupational hazard". Muscle Nerve. 1995 Feb; 18(2):255-6. Beydoun SR, Schnall S, Susko T. PMID: 7823992.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    40. Facial myokymia secondary to neurocysticercosis. Muscle Nerve. 1994 Sep; 17(9):1060-1. Beydoun SR. PMID: 8065393.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    41. Delayed diagnosis of Lambert-Eaton myasthenic syndrome in a patient presenting with recurrent refractory respiratory failure. Muscle Nerve. 1994 Jun; 17(6):689-90. Beydoun SR. PMID: 8196717.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    42. Unilateral trigeminal motor neuropathy as a presenting feature of neurofibromatosis type 2 (NF2) Muscle Nerve. 1993 Oct; 16(10):1136-7. Beydoun SR. PMID: 8413365.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    43. Obstetrical lumbosacral plexus injury. Muscle Nerve. 1993 Jul; 16(7):801. Gibbs MA, Beydoun SR. PMID: 8347228.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    44. Calf muscle hypertrophy, complex repetitive discharges and spinal stenosis. Muscle Nerve. 1993 Mar; 16(3):322-3. Beydoun SR, Shapiro C, Engel WK. PMID: 8446132.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    45. Misdiagnosis of cytomegalovirus polyradiculopathy, coexisting with HIV neuropathy. Muscle Nerve. 1991 Jun; 14(6):575-6. Beydoun SR. PMID: 1649399.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    46. Long-term plasmapheresis therapy is effective and safe in children with chronic relapsing dysimmune polyneuropathy. Rev Neurol (Paris). 1990; 146(2):123-7. Beydoun SR, Engel WK, Karofsky P, Schwartz MU. PMID: 2157270.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    47. Ifosfamide encephalopathy. J Toxicol Clin Toxicol. 1989; 27(4-5):293-8. Danesh MM, De Giorgio CM, Beydoun SR, Kemp RA. PMID: 2600992.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    48. Analogs of thyrotropin-releasing hormone: hypotheses relating receptor binding to net excitation of spinal lower motor neurons. Biochem Biophys Res Commun. 1986 Aug 14; 138(3):1184-90. Hawkins EF, Beydoun SR, Haun CK, Engel WK. PMID: 3019335.
      View in: PubMed   Mentions: 3     Fields:    Translation:AnimalsCells
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