More common in older patients
Symptomatic orthostasis is clinically much more important than actual change in vitals
Classically, drop in SBP ≥20 mm Hg or increase in HR ≥ 30 bpm when moving from lying to standing
Studies show that<unk>  vitals common at baseline health, and not necessarily abnormal in moderate volume loss 
Classically, drop in SBP ≥20 mm Hg or increase in HR ≥ 30 bpm when moving from lying to standing
Studies show that<unk>  vitals common at baseline health, and not necessarily abnormal in moderate volume loss
Orthostatic hypotension
Autonomic dysfunction
Catatonia
Parkinson's disease
Nystagmus
Lewy Body Dementia
Autonomic dysreflexia
Shy-Drager Syndrome