OPQRST is a pain and symptom assessment acronym: Onset, Provocation, Quality, Region, Severity and Time.
Source check: 8 August 2026 · How this page is checked · Report a correction
Quick answer
OPQRST: O means Onset; P means Provocation; Q means Quality; R means Region or radiation; S means Severity; T means Time. OPQRST is a pain and symptom assessment acronym: Onset, Provocation, Quality, Region, Severity and Time.
When OPQRST helps
Use OPQRST when someone is awake, able to talk and has pain or a concerning symptom. It pairs well with SAMPLE and can make a 000 or ambulance handover clearer, especially for chest pain, abdominal pain or injury pain.
Safety boundary: Structured questions support care, but questioning must stop when urgent treatment or a 000 call is needed. If a real incident is unfolding, act on the person’s condition, call Triple Zero (000) when it is an emergency and follow the operator’s instructions.
Where it sits: OPQRST is commonly read alongside ISBAR, PQRST, SAMPLE, SBAR, but each term has a different job. The comparisons later on this page explain those boundaries.
What Does OPQRST Stand For?
| O | Onset When did it start and what was happening at the time? |
| P | Provocation What makes it better or worse? |
| Q | Quality What does it feel like in the person’s own words? |
| R | Region or radiation Where is it, and does it move anywhere else? |
| S | Severity How bad is it, often using a simple scale if appropriate? |
| T | Time How has it changed, and has it happened before? |
Common Mistakes
- Do not interrogate someone when urgent action is needed first.
- Do not lead the person into a pain description; let them describe it.
- Do not let OPQRST delay 000 for chest pain, stroke signs, severe injury or collapse.
A Real-World OPQRST Scenario
The scene: A person reports severe pain and the responder needs a structured description for ambulance handover.
In this OPQRST scene, begin with O for Onset: When did it start and what was happening at the time? That opening prompt matters here because Use OPQRST when someone is awake, able to talk and has pain or a concerning symptom. It pairs well with SAMPLE and can make a 000 or ambulance handover clearer, especially for chest pain, abdominal pain or injury pain. Keep the observation tied to pain assessment, chest pain questions, first aid handover and SAMPLE history follow-up; in practice, watch what changed from the person’s normal state, the timeline, relevant symptoms and the response to care rather than reciting the letters without checking the person or setting.
For OPQRST, T closes the pattern as Time. How has it changed, and has it happened before? Before the sequence is treated as complete, relate it to the minimum facts the next responder needs to act without making the person repeat the whole story. A specific trap to avoid is: Do not let OPQRST delay 000 for chest pain, stroke signs, severe injury or collapse.
Where the scenario could change: Do not interrogate someone when urgent action is needed first. Structured questions support care, but questioning must stop when urgent treatment or a 000 call is needed. If the facts no longer fit a stable OPQRST example, stop rehearsing the acronym and move to the safer emergency, clinical or workplace pathway.
Letter-By-Letter Practical Notes
The short table above is designed for scanning. These notes are for readers who want to understand how each component affects a real decision about pain assessment, chest pain questions, first aid handover and SAMPLE history follow-up.
- O — Onset: As the opening prompt, this means: When did it start and what was happening at the time? In a OPQRST situation, the useful check is whether that instruction changes what you observe, what you do next or what you need to report.
- P — Provocation: As the step 2 of the sequence, this means: What makes it better or worse? In a OPQRST situation, the useful check is whether that instruction changes what you observe, what you do next or what you need to report.
- Q — Quality: As the step 3 of the sequence, this means: What does it feel like in the person’s own words? In a OPQRST situation, the useful check is whether that instruction changes what you observe, what you do next or what you need to report.
- R — Region or radiation: As the step 4 of the sequence, this means: Where is it, and does it move anywhere else? In a OPQRST situation, the useful check is whether that instruction changes what you observe, what you do next or what you need to report.
- S — Severity: As the step 5 of the sequence, this means: How bad is it, often using a simple scale if appropriate? In a OPQRST situation, the useful check is whether that instruction changes what you observe, what you do next or what you need to report.
- T — Time: As the closing prompt, this means: How has it changed, and has it happened before? In a OPQRST situation, the useful check is whether that instruction changes what you observe, what you do next or what you need to report.
OPQRST and similar terms
Questions that help someone describe pain or another symptom. The O asks how it started; the remaining letters overlap with PQRST.
Here is how the related terms differ:
- ISBAR: A clear handover format that starts by identifying yourself and the person, then explains the situation, background, assessment and help needed.
- PQRST: Questions about pain: what brings it on, what it feels like, where it is, how severe it is and when it happens. It helps describe symptoms without diagnosing the cause.
- SAMPLE: Questions about symptoms, allergies, medicines, past history, last food or drink and the events leading up to the problem. It gathers background information.
- SBAR: A way to give a clear report: explain the situation, background, your assessment and what help is needed.
Frequently asked questions
What does OPQRST stand for?
O means Onset; P means Provocation; Q means Quality; R means Region or radiation; S means Severity; T means Time. OPQRST is a pain and symptom assessment acronym: Onset, Provocation, Quality, Region, Severity and Time.
When is OPQRST useful?
Use OPQRST when someone is awake, able to talk and has pain or a concerning symptom. It pairs well with SAMPLE and can make a 000 or ambulance handover clearer, especially for chest pain, abdominal pain or injury pain.
How is OPQRST different from ISBAR?
OPQRST is framed here around pain assessment, chest pain questions, first aid handover and SAMPLE history follow-up. ISBAR is framed around clear handover to 000 call-takers, first aid officers, ambulance crews or healthcare staff. They may appear in the same course or incident, but they answer different questions and should not be treated as interchangeable.
When should I call Triple Zero (000)?
Call Triple Zero (000) when the person is seriously ill or injured, is deteriorating, or the urgent warning signs described on this page are present. Structured questions support care, but questioning must stop when urgent treatment or a 000 call is needed.
What should I notice first when using OPQRST?
Start with O for Onset: When did it start and what was happening at the time? Keep the whole situation in view and escalate early if the person looks seriously ill or injured.
What is a common mistake with OPQRST?
Do not interrogate someone when urgent action is needed first. The acronym should make the next decision safer, not create a reason to delay help.
How can I practise OPQRST without pretending it is a diagnosis?
Use a short scenario, say what you can actually see or hear, and explain the next safe action in plain language. Then practise this category-specific task: give the same case as a 20-second handover and then as a fuller written incident note.
Related Acronyms
This guide is educational and does not replace accredited first aid training, professional medical advice, or directions from emergency services.
