Medical Degree
St Joseph University School of Medicine, Lebanon
Neurology, Baylor College of Medicine, Houston, TX
Movement Disorders, Cleveland Clinic, Cleveland, OH & Baylor College of Medicine, Houston, TX

Areas of Interests

Clinical Interests

Parkinson’s disease, tremor, dystonia, ataxia, spasticity


Publication Information

Mehanna R, Jankovic J, “Respiratory problems in neurologic movement disorders. Parkinsonism Relat Disord. 2010 Dec; 16(10):628-638.

Mehanna R, Shaltoni H, Morsi H, Mawad M. Endovascular Treatment of Sigmoid Sinus Aneurysm Presenting as Devastating Pulsatile Tinnitus. A Case and Review of Literature. Interv Neuroradiol. 2010 Dec;16(4):451-454.

Mehanna R, Ondo W. Sleep problems in Parkinson’s disease patients. Neurodegenerative disease management. 2011 Aug: 1(4):307-321.

Mehanna R, Patton E, Phan C, Harati Y. Amyotrophic Lateral Sclerosis with positive anti-acetylcholine receptor antibodies. Case report and review of the literature. J Clin Neuromuscul Dis. 2012 Dec; 14(2):82-5

Mehanna R, Jankovic J. Respiratory problems associated with dystonia. Mov Disord. Mov Disord. 2012 Dec;27(14):1816-9.

Mehanna R, Hunter C, Davidson A, Jimenez-Shahed J, Jankovic J. Analysis of CYP2D6 genotype and response to tetrabenazine. Mov Disord. 2013 Feb;28(2):210-5.

Mehanna R, Itin I. From normal gait to loss of ambulation in 6 months: a novel presentation of SCA 17. Cerebellum. Cerebellum. 2013 Aug;12(4):568-71.

Mehanna R, Jankovic J. Movement disorders in multiple sclerosis and other demyelinating diseases. J Neurol Sci. Neurol Sci. 2013 May 15; 328(1-2):1-8.

Mehanna R, Jankovic J. Movement disorders in cerebrovascular disease. Lancet Neurol. 2013 Jun;12(6):597-608.

Mehanna R, Jankovic J. Restless legs syndrome and cerebrovascular disease- Authors’ reply. Lancet Neurol. 2013 Aug;12(8):734-5.

Mehanna R, Lai E. Deep Brain Stimulation in Parkinson’s Disease. Transl Neurodegener. 2013 Nov 18;2(1):22.

Mehanna R, Itin I. Which Approach is Better: Bilateral Versus Unilateral Thalamic Deep Brain Stimulation in Patients with Fragile X-Associated Tremor Ataxia Syndrome. Cerebellum. 2014 Apr;13(2):222-5.

Mehanna R, Machado AG, Oravivattanakul S, Genc G,  Cooper SE. Comparing 2 deep brain stimulation leads to one in refractory tremor. Cerebellum. 2014 Aug;13(4):425-32

Mehanna R , Moore S, Hou G, Sarwar A, Lai E. Comparing Clinical Features of Young-Onset, Middle-Onset and Late-Onset Parkinson’s Disease. Movement disorders. Parkinsonism Relat Disord. 2014 May;20(5):530-4.

Mehanna R, Bohnen N, Sarter M, Muller M, Dauer W, Albin R, Arbor A. Gait speed in Parkinson Disease correlates with Cholinergic degeneration. Neurology. 2014 Apr 29;82(17):1568-9.

Mehanna R, Scherzer CR, Ding H, Locascio JJ. Unrecognized vitamin D3 deficiency is common in Parkinson disease: Harvard Biomarker Study. Neurology. 2014 May 6;82(18):1666.

Mehanna R. Cognitive changes after deep brain stimulation in Parkinson’s disease: a critical review. Brain Disord Ther 2014, 3:2.

Mehanna R, Itin I. Tremor, FXTAS and Klinefelter syndrome. J Neurol Disord 2014, 2:3

Abboud H, Mehanna R, Machado A, Ahmed A, Gostkowski M, Cooper S, Itin I, Sweeney P, Pandya M, Kubu C, Floden D, Ford PJ, Fernandez HH. Comprehensive, Multi-disciplinary DBS Screening for Parkinson Patients: No Room for “Short Cuts”. Movement Disorders Clinical Practice 10/2014; DOI: 10.1002/mdc3.12090

Mehanna R, Wilson KM, Cooper SE, Machado AG and Fernandez H.A Survey of the Clinical State and Programming Patterns of Movement Disorder Patients with Impending DBS Battery Power Failure. Journal of Clinical Movement Disorders 2014, 1:6.

Mehanna R. The jury is still out. January 28, 2015.

Matias CM, Mehanna R, Cooper SE, Amit A, Lempka SF, Silva D, Carlotti CG Jr, Butler RS, Machado AG. Correlation Among Anatomic Landmarks, Location of Subthalamic Deep Brain Stimulation Electrodes, Stimulation Parameters, and Side Effects During Programming Monopolar Review. Neurosurgery. 2015 March; 11:99-109.

Additional Information

Selected Awards and Honors:

Faculty Teaching Award, McGovern Medical School at UTHealth – Department of Neurology, May 2015

Featured in “Top Neurologists of the World”, 2015

Featured in Marquis’ “Who’s Who in America”, 2015

Member of the Parkinson’s Study Groups since 2014