Explore a comprehensive medicine lecture on multiple sclerosis (MS), covering treatment, symptoms, types, and pathophysiology. Delve into the definition, etiology, and clinical presentation of MS, including specific signs like internuclear ophthalmoplegia, L'hermitte sign, and Uhthoff's phenomenon. Learn about various MS phenotypes, including relapsing-remitting, secondary progressive, and primary progressive forms. Understand the diagnostic process using McDonald's criteria and MRI findings. Examine treatment options, long-term management strategies, disease-modifying therapies, and supportive care measures. Gain valuable insights for USMLE Step 2 CK, NEET PG, and NCLEX exams in this detailed 26-minute video lecture by Dr. Waqas Fazal.