# Orthostatic Hypotension
Most likely secondary to ***. DDx also includes decreased PO intake, age-related baroreceptor dysfunction, primary or secondary autonomic insufficiency, neurodegenerative disease, med effect, and cardiac etiology.
- Fluid resuscitation challenge, IVC US
- Eval for dysautonomia
- A1c, HIV, TSH, RPR, B12
- EKG
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