Dr. Nicholson, an Assistant in Neurology at Massachusetts General Hospital and Instructor at Harvard Medical School, received her MD from George Washington School of Medicine and Health Sciences and completed her Neurology Residency at Dartmouth-Hitchcock Medical Center. She completed a Fellowship in Neuromuscular Disorders at Massachusetts General Hospital and Brigham and Women's Hospital, followed by a Clinical Research Fellowship in Neurodegenerative Disorders at Massachusetts General Hospital.

Her current clinical activities relate to her subspecialty interests in neuromuscular medicine and ALS. In addition to evaluating patients in the Multidisciplinary ALS Clinic and Neuromuscular  Clinic, she is also involved in the MGH Brain Health Initiative.

Dr. Nicholson is actively engaged in clinical trials and observational studies in ALS. She works closely with families affected by ALS, both clinically and through research. Her research strives to explore the role of the microbiome in ALS and prepare for prevention trials in inherited forms of the disease.  Additionally, she is interested in identifying biomarkers to better diagnose, track disease progression, and predict prognosis in people with ALS.

Dr. Nicholson is board certified in Neurology (American Board of Psychiatry and Neurology). She is a member of the American Academy of Neurology and American Association of Neuromuscular and Electrodiagnostic Medicine.