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Said R Beydoun, MD

TitleProfessor of Clinical Neurology
InstitutionUniversity of Southern California
DepartmentNeurology
AddressHCT 3000
Health Sciences Campus
Los Angeles CA 90089-9405
Phone+1 323 442 6085
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    Other Positions
    TitleProgram Director, Clinical Neurophysiology Fellowship

    TitleDivision 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.
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    1. Beydoun S, Rosenfeld J.Edaravone in Amyotrophic Lateral Sclerosis-Lessons from the Clinical Development Program and the Importance of a Strategic Clinical Design. US Neurology, 14(1): 47-53, 2018. 2018; 1(14):47-53.
    2. Leila Darki, Said R Beydoun.Delayed Appearance of Conduction Block in Multifocal Motor Neuropathy. US Neurology. 2017; 13(2):99-102.
    3. Gevorgyan AG, Shah A, Beydoun S. 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. PMID: 28221307.
      View in: PubMed
    4. Said R Beydoun, Thomas H Brannagan III, Peter Donofrio, Carol Lee Koski, Eric Lancaster .Chronic Inflammatory Demyelinating Polyradiculoneuropathy 101—Pitfalls and Pearls of Diagnosis and Treatment. US Neurology. 2017; 13(1):26-34.
    5. 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 S, 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. Randomized Trial of Thymectomy in Myasthenia Gravis. N Engl J Med. 2016 08 11; 375(6):511-22. PMID: 27509100.
      View in: PubMed
    6. Rison RA, Shepphird JK, Beydoun S. When to write a neurology case report. J Med Case Rep. 2016 Apr 06; 10:92. PMID: 27048244; PMCID: PMC4822247.
    7. Tran AT, Rison RA, Beydoun S. Disulfiram neuropathy: two case reports. J Med Case Rep. 2016 Mar 31; 10:72. PMID: 27029711; PMCID: PMC4815152.
    8. Krishna Pokala, David Girard, Said R Beydoun .Different Presentations of Myelopathy—A Case Series. 2016; 12(1):22-26.
    9. Rison RA, Beydoun S. Paraproteinemic neuropathy: a practical review. BMC Neurol. 2016 Jan 28; 16:13. PMID: 26821540; PMCID: PMC4731930.
    10. Shah A, Rison RA, Beydoun S. 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. PMID: 26583495.
      View in: PubMed
    11. Chilingaryan A, Rison RA, Beydoun S. Misdiagnosis of inclusion body myositis: two case reports and a retrospective chart review. J Med Case Rep. 2015 Aug 13; 9:169. PMID: 26268316; PMCID: PMC4533788.
    12. Richard A Rison, Said R Beydoun .Differentiating Multifocal Motor Neuropathy from Entrapment Neuropathy – A Diagnostic Challenge. US Neurology. 2015; 12(1):17-21.
    13. Mora JR, Rison RA, Beydoun S. Chiari malformation type I with cervicothoracic syringomyelia masquerading as bibrachial amyotrophy: a case report. J Med Case Rep. 2015 Jan 27; 9:11. PMID: 25622641; PMCID: PMC4417345.
    14. Beydoun S, Gong H, Ashikian N, Rison RA. 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. PMID: 25312448; PMCID: PMC4205965.
    15. Hahn AF, Beydoun S, Lawson V. A controlled trial of intravenous immunoglobulin in multifocal motor neuropathy. J Peripher Nerv Syst. 2013 Dec; 18(4):321-30. PMID: 24725024.
      View in: PubMed
    16. Harutunian GM, Beydoun S, Rison RA. Kennedy disease misdiagnosed as polymyositis: a case report. BMC Res Notes. 2013 Sep 28; 6:389. PMID: 24073646; PMCID: PMC3852050.
    17. Beydoun S, Cho J. Hereditary neuropathy with liability to pressure palsy: two cases of difficult diagnosis. J Clin Neuromuscul Dis. 2013 Sep; 15(1):28-33. PMID: 23965407.
      View in: PubMed
    18. Johl HK, Olshansky A, Beydoun S, Rison RA. Cervicothoracic spinal cord and pontomedullary injury secondary to high-voltage electrocution: a case report. J Med Case Rep. 2012 Sep 13; 6:296. PMID: 22974044; PMCID: PMC3445848.
    19. Beydoun S, Muir J, Apelian RG, Go JL, Lin FP. 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. PMID: 22538304.
      View in: PubMed
    20. Rison RA, Beydoun S. Bilateral phrenic neuropathies in a diabetic patient responsive to intravenous immunoglobulin: a case report. Clin Neurol Neurosurg. 2011 Nov; 113(9):788-91. PMID: 21906870.
      View in: PubMed
    21. Rison RA, Beydoun S. 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. PMID: 21321494.
      View in: PubMed
    22. Beydoun S, Wang J, Levine RL, Farvid A. Emotional stress as a trigger of myasthenic crisis and concomitant takotsubo cardiomyopathy: a case report. J Med Case Rep. 2010 Dec 03; 4:393. PMID: 21129175; PMCID: PMC3003678.
    23. Rison RA, Beydoun S. 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. PMID: 20809955; PMCID: PMC2941760.
    24. Beydoun S, Shatzmiller RA. Chronic immune-mediated demyelinating polyneuropathy in the setting of cetuximab treatment. Clin Neurol Neurosurg. 2010 Dec; 112(10):900-2. PMID: 20685033.
      View in: PubMed
    25. Rison RA, Beydoun S. Teaching Video NeuroImages: tongue myokymia following head and neck radiotherapy for nasopharyngeal carcinoma. Neurology. 2009 Apr 07; 72(14):e65. PMID: 19349595.
      View in: PubMed
    26. Beydoun S, Sykes SN, Ganguly G, Lee TS. Hereditary neuropathy with liability to pressure palsies: description of seven patients without known family history. Acta Neurol Scand. 2008 Apr; 117(4):266-72. PMID: 17922888.
      View in: PubMed
    27. Beydoun S, Alarcón F, Mangat S, Wan Y. Long-term safety and tolerability of oxcarbazepine in painful diabetic neuropathy. Acta Neurol Scand. 2007 Apr; 115(4):284-8. PMID: 17286624.
      View in: PubMed
    28. Dogra S, Beydoun S, Mazzola J, Hopwood M, Wan Y. Oxcarbazepine in painful diabetic neuropathy: a randomized, placebo-controlled study. Eur J Pain. 2005 Oct; 9(5):543-54. PMID: 16139183.
      View in: PubMed
    29. Beydoun S, Rison RA, Commins D. Secondary amyloidosis as a life-ending event in multifocal motor neuropathy. Muscle Nerve. 2001 Oct; 24(10):1396-402. PMID: 11562923.
      View in: PubMed
    30. Beydoun S, Copeland D. Bilateral phrenic neuropathy as a presenting feature of multifocal motor neuropathy with conduction block. Muscle Nerve. 2000 Apr; 23(4):556-9. PMID: 10716767.
      View in: PubMed
    31. Beydoun S, Copeland DD, Korula J. Generalized myokymia as a unique association with gluten-sensitive enteropathy. Eur Neurol. 2000; 44(4):254-5. PMID: 11096230.
      View in: PubMed
    32. Beydoun S. Multifocal motor neuropathy with conduction block misdiagnosed as multiple entrapment neuropathies. Muscle Nerve. 1998 Jun; 21(6):813-5. PMID: 9585340.
      View in: PubMed
    33. Beydoun S, Rodriguez R. Neuralgic amyotrophy misdiagnosed as diaphragmatic rupture. Muscle Nerve. 1996 Sep; 19(9):1181-2. PMID: 8761280.
      View in: PubMed
    34. Beydoun S, Schnall S, Susko T. 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. PMID: 7823992.
      View in: PubMed
    35. Beydoun S. Facial myokymia secondary to neurocysticercosis. Muscle Nerve. 1994 Sep; 17(9):1060-1. PMID: 8065393.
      View in: PubMed
    36. Beydoun S. Delayed diagnosis of Lambert-Eaton myasthenic syndrome in a patient presenting with recurrent refractory respiratory failure. Muscle Nerve. 1994 Jun; 17(6):689-90. PMID: 8196717.
      View in: PubMed
    37. Beydoun S. Unilateral trigeminal motor neuropathy as a presenting feature of neurofibromatosis type 2 (NF2) Muscle Nerve. 1993 Oct; 16(10):1136-7. PMID: 8413365.
      View in: PubMed
    38. Beydoun S, Shapiro C, Engel WK. Calf muscle hypertrophy, complex repetitive discharges and spinal stenosis. Muscle Nerve. 1993 Mar; 16(3):322-3. PMID: 8446132.
      View in: PubMed
    39. Beydoun S. Misdiagnosis of cytomegalovirus polyradiculopathy, coexisting with HIV neuropathy. Muscle Nerve. 1991 Jun; 14(6):575-6. PMID: 1649399.
      View in: PubMed
    40. Beydoun S, Engel WK, Karofsky P, Schwartz MU. Long-term plasmapheresis therapy is effective and safe in children with chronic relapsing dysimmune polyneuropathy. Rev Neurol (Paris). 1990; 146(2):123-7. PMID: 2157270.
      View in: PubMed
    41. Danesh MM, De Giorgio CM, Beydoun S, Kemp RA. Ifosfamide encephalopathy. J Toxicol Clin Toxicol. 1989; 27(4-5):293-8. PMID: 2600992.
      View in: PubMed
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