What is the role of lab studies in the diagnosis of autonomic failure syndromes?

Updated: Oct 21, 2018
  • Author: Mohini Gurme, MD; Chief Editor: Selim R Benbadis, MD  more...
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Lab studies

  • Evaluation for acute inflammatory demyelinating polyneuropathy (AIDP): Prompted by an acute onset of autonomic symptoms without other neurologic problems or with features such as subtle weakness or numbness

  • Measurement of ganglionic AChR antibody: A subacute onset without other neurologic or systemic findings may indicate AAN [2, 3]

  • Evaluation for Parkinson's disease and MSA: Should be performed in patients with a chronic onset

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