Loading...

Said R Beydoun, MD

Title(s)Professor of Clinical Neurology
Phone+1 323 442 6085
vCardDownload vCard
    Other Positions
    Title(s)Program Director, Clinical Neurophysiology Fellowship

    Title(s)Division Chief, Neuromuscular Disorders


    Collapse Overview 
    Collapse Overview
    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.

    Collapse ORNG Applications 
    Collapse Clinical Trials
    Collapse Websites

    Collapse Bibliographic 
    Collapse Publications
    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.
    List All   |   Timeline
    1. 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. Randomized phase 2 study of FcRn antagonist efgartigimod in generalized myasthenia gravis. Neurology. 2019 Jun 04; 92(23):e2661-e2673. PMID: 31118245.
      View in: PubMed
    2. 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. 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 Mar; 18(3):259-268. PMID: 30692052.
      View in: PubMed
    3. Nazila Rad, Said R Beydoun.Late Onset Hereditary Transthyretin Amyloidosis Polyneuropathy in Two Patients with Acquired Demyelinating Features. US Neurology. 2018; 2(14):98-101.
    4. Chow F, Darki L, Beydoun SR.The Challenges of Distinguishing POEMS from Chronic Inflammatory Demyelinating Polyneuropathy (CIDP). Importance of Early Recognition and Diagnosis of POEMS. US Neurology. 2018; 2(14).
    5. Beydoun SR, 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.
    6. Darki L, Beydoun SR.Delayed Appearance of Conduction Block in Multifocal Motor Neuropathy. US Neurology. 2017; 2(13):99-102.
    7. Gevorgyan AG, Shah A, Beydoun SR. 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
    8. 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.
    9. 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. Randomized Trial of Thymectomy in Myasthenia Gravis. N Engl J Med. 2016 08 11; 375(6):511-22. PMID: 27509100.
      View in: PubMed
    10. Rison RA, Shepphird JK, Beydoun SR. When to write a neurology case report. J Med Case Rep. 2016 Apr 06; 10:92. PMID: 27048244.
      View in: PubMed
    11. Tran AT, Rison RA, Beydoun SR. Disulfiram neuropathy: two case reports. J Med Case Rep. 2016 Mar 31; 10:72. PMID: 27029711.
      View in: PubMed
    12. Krishna Pokala, David Girard, Said R Beydoun .Different Presentations of Myelopathy—A Case Series. 2016; 12(1):22-26.
    13. Rison RA, Beydoun SR. Paraproteinemic neuropathy: a practical review. BMC Neurol. 2016 Jan 28; 16:13. PMID: 26821540.
      View in: PubMed
    14. Shah A, Rison RA, Beydoun SR. 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
    15. Chilingaryan A, Rison RA, Beydoun SR. Misdiagnosis of inclusion body myositis: two case reports and a retrospective chart review. J Med Case Rep. 2015 Aug 13; 9:169. PMID: 26268316.
      View in: PubMed
    16. Richard A Rison, Said R Beydoun .Differentiating Multifocal Motor Neuropathy from Entrapment Neuropathy – A Diagnostic Challenge. US Neurology. 2015; 12(1):17-21.
    17. Mora JR, Rison RA, Beydoun SR. 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.
      View in: PubMed
    18. Beydoun SR, 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.
      View in: PubMed
    19. Hahn AF, Beydoun SR, Lawson V, Oh M, Empson VG, Leibl H, Ngo LY, Gelmont D, Koski CL. 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
    20. Harutunian GM, Beydoun SR, Rison RA. Kennedy disease misdiagnosed as polymyositis: a case report. BMC Res Notes. 2013 Sep 28; 6:389. PMID: 24073646.
      View in: PubMed
    21. Beydoun SR, 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
    22. Johl HK, Olshansky A, Beydoun SR, 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.
      View in: PubMed
    23. Beydoun SR, 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
    24. Rison RA, Beydoun SR. 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
    25. Rison RA, Beydoun SR. 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
    26. Beydoun SR, 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.
      View in: PubMed
    27. Rison RA, Beydoun SR. 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.
      View in: PubMed
    28. Beydoun SR, 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
    29. Rison RA, Beydoun SR. 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
    30. Beydoun SR, 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
    31. 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
    32. 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
    33. Beydoun SR, 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
    34. Beydoun SR, 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
    35. Beydoun SR, 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
    36. Beydoun SR. Multifocal motor neuropathy with conduction block misdiagnosed as multiple entrapment neuropathies. Muscle Nerve. 1998 Jun; 21(6):813-5. PMID: 9585340.
      View in: PubMed
    37. Beydoun SR, Rodriguez R. Neuralgic amyotrophy misdiagnosed as diaphragmatic rupture. Muscle Nerve. 1996 Sep; 19(9):1181-2. PMID: 8761280.
      View in: PubMed
    38. Beydoun SR, 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
    39. Beydoun SR. Facial myokymia secondary to neurocysticercosis. Muscle Nerve. 1994 Sep; 17(9):1060-1. PMID: 8065393.
      View in: PubMed
    40. Beydoun SR. 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
    41. Beydoun SR. 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
    42. Gibbs MA, Beydoun SR. Obstetrical lumbosacral plexus injury. Muscle Nerve. 1993 Jul; 16(7):801. PMID: 8347228.
      View in: PubMed
    43. Beydoun SR, 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
    44. Beydoun SR. Misdiagnosis of cytomegalovirus polyradiculopathy, coexisting with HIV neuropathy. Muscle Nerve. 1991 Jun; 14(6):575-6. PMID: 1649399.
      View in: PubMed
    45. Beydoun SR, 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
    46. Danesh MM, De Giorgio CM, Beydoun SR, Kemp RA. Ifosfamide encephalopathy. J Toxicol Clin Toxicol. 1989; 27(4-5):293-8. PMID: 2600992.
      View in: PubMed
    47. Hawkins EF, Beydoun SR, Haun CK, Engel WK. 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. PMID: 3019335.
      View in: PubMed