Gastroparesis-An Often-Overlooked Sign of Multiple Sclerosis: Case Report.

Multiple sclerosis (MS) is a chronic autoimmune disease and demyelinating disorder of the central nervous system (CNS) with diverse clinical presentations that can make the diagnosis challenging. In this case report, we describe a rare initial presentation of MS, mistaken for Type 1 diabetes mellitus (T1DM) impaired gastric motility. The patient is a 32-year-old female with a history significant for T1DM who presented with 3 days of intractable vertigo, nystagmus, and gait disturbance. She was discharged 2 days prior for intractable nausea and vomiting presumed to be due to impaired gastric motility called gastroparesis. There was no prior history of focal neurologic deficits. Her family history revealed extensive autoimmune diseases in multiple first-degree relatives. Physical examination suggested a peripheral lesion but could not rule out a central lesion. Magnetic resonance imaging (MRI) brain demonstrated white matter lesions in regions specific for MS. The patient experienced modest improvement with IV corticosteroids. Patients with T1DM have a threefold increase in the incidence of MS. While gastroparesis is an uncommon initial symptom of MS, this diagnosis should be considered, particularly when neurological deficits are present. This case underscores the importance of considering the enteric nervous system in patients with preexisting autoimmune conditions with new-onset neurological symptoms.