What Does OPQRST Stand For?
OPQRST is a mnemonic used in medical history-taking that stands for: Onset, Provocation/Palliation, Quality, Radiation, Severity, and Time.
Components of OPQRST
This systematic approach helps clinicians characterize symptoms, particularly pain or discomfort, in a structured manner:
- O - Onset: When did the symptom start? Was it sudden or gradual?
- P - Provocation/Palliation: What makes it better or worse? What triggers it?
- Q - Quality: What does it feel like? (sharp, dull, burning, crushing, etc.)
- R - Radiation: Does it spread anywhere else in the body?
- S - Severity: How intense is it? (often rated on a 0-10 scale)
- T - Time: How long does it last? Is it constant or intermittent? Has it changed over time?
Clinical Application
OPQRST is primarily taught and used during the history of present illness (HPI) portion of the medical interview, not in the social history section. This mnemonic provides a standardized framework for gathering comprehensive symptom information across all medical specialties.
Enhanced Version: OPQRSTU
One proposed enhancement adds "U" for Use (substance use) to create OPQRSTU 1. This modification emphasizes screening for substance use disorders during the HPI rather than relegating it to social history, given that SUDs affect 20.1 million Americans and can contribute to virtually any chief complaint. The "U" can be further expanded using the SORTED acronym:
- Street drugs (illicit substances)
- OTCs (over-the-counter medications)
- Rx (prescriptions, including non-medicinal use)
- Tobacco (including e-cigarettes)
- EtOH (alcohol)
- Dietary (caffeine, vitamins, herbal supplements)
Important Caveats
While OPQRST provides a structured framework, the severity component (S) requires careful interpretation. Studies in hereditary angioedema demonstrate that patient-reported severity scores can vary significantly—with untreated attacks averaging 8.6/10 versus 4.5/10 for treated attacks on a Likert scale 2. This highlights that severity ratings are subjective and context-dependent, requiring clinical correlation with objective findings rather than relying solely on numerical scores.