title: A woman with sensory deficits, paresthesias, and ataxia.
abstract: Multiple sclerosis (MS) is a demyelinating and inflammatory disease that is thought to be autoimmune in nature. MS typically affects young women ages 20 to 40 years, but late-onset MS (after age 50 years) is more prevalent than previously thought. Between 4% and 9% of patients with MS have symptoms onset after age 50 years.
authors.affiliation: Jon Casto practices at Family Health Associates in South Charleston, W.Va. Jennifer Childers is an associate professor in the PA program at Marietta College in Marietta, Ohio, and practices part-time in occupational medicine. The authors have disclosed no potential conflicts of interest, financial or otherwise.
authors.forename: Jon
authors.initials: J
authors.lastname: Casto
authors.forename: Jennifer
authors.initials: J
authors.lastname: Childers
mesh_terms: D017668:Age of Onset; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000175:diagnosis*