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The orthostatic hypotension questionnaire (OHQ) is a validated symptom assessment tool made up of two components: a) the OH symptom assessment (OHSA) scale, with 6 separate items, and b) the OH daily activity scale (OHDAS) with 4 individual items. The OHQ uses a scale from 0 (no symptoms/no interference) to 10 (worst possible/complete interference) and asks the patient to rate their symptoms for the previous week.
