Pain assessment is a core medical science skill because pain is subjective and must be measured in a consistent way. This cheat sheet covers common pain scales, structured pain history questions, and basic scoring tools used in clinical settings. Students need these references to understand how healthcare workers describe pain clearly, compare changes over time, and communicate findings safely.
Key Facts
- The numeric rating scale asks a patient to rate pain from 0 to 10, where 0 = no pain and 10 = worst possible pain.
- The Wong-Baker FACES scale uses facial expressions to help patients communicate pain intensity, often with scores from 0 to 10.
- PQRST stands for Provocation, Quality, Region, Severity, and Timing, and it organizes the main questions in a pain assessment.
- FLACC stands for Face, Legs, Activity, Cry, and Consolability, and each category is scored 0, 1, or 2 for a total score from 0 to 10.
- A higher pain score usually means more severe pain, but the score must be interpreted with the patient's behavior, condition, and history.
- Reassessment compares a new pain score with the previous score after an intervention, such as medication, repositioning, rest, or ice.
- Pain documentation should include location, intensity, description, onset, duration, triggers, relieving factors, interventions, and response.
Vocabulary
- Pain scale
- A tool used to measure or describe how much pain a patient is experiencing.
- Numeric rating scale
- A pain scale where the patient chooses a number, usually from 0 to 10, to report pain intensity.
- PQRST assessment
- A structured method for asking about what causes pain, what it feels like, where it is, how severe it is, and when it occurs.
- FLACC scale
- An observational pain scale that scores face, legs, activity, cry, and consolability when a patient cannot clearly report pain.
- Reassessment
- A follow-up check used to see whether pain has improved, worsened, or stayed the same after care is given.
- Subjective symptom
- A symptom that is reported by the patient and cannot be directly measured by another person.
Common Mistakes to Avoid
- Assuming a quiet patient has no pain is wrong because some patients hide pain, cannot speak, or show pain in subtle ways.
- Using only one pain score without asking follow-up questions is wrong because the score does not explain location, cause, timing, or quality.
- Comparing pain scores between different patients as if they mean the same thing is wrong because pain is subjective and personal.
- Forgetting to reassess after an intervention is wrong because healthcare workers need to know whether the action helped or if pain is worsening.
- Recording only 'patient has pain' is wrong because useful documentation must include the pain rating, location, description, timing, and response to treatment.
Practice Questions
- 1 A patient reports pain as 7 out of 10 before medication and 3 out of 10 after medication. By how many points did the pain score decrease?
- 2 On the FLACC scale, a patient scores Face = 1, Legs = 2, Activity = 1, Cry = 0, and Consolability = 2. What is the total FLACC score?
- 3 Use PQRST to write five pain assessment questions for a patient with sudden chest pain.
- 4 Why should a healthcare worker use both a pain scale and descriptive questions instead of relying only on a number?
Understanding Pain Scales & Assessment Reference
Pain is produced by the nervous system after signals from the body are processed in the brain. Tissue injury can cause pain, but pain can also occur when nerves are irritated or when the brain continues to interpret danger after an injury has healed. This is why two people with similar injuries may report very different experiences.
Age, past experiences, fear, fatigue, culture, mood, and current illness can affect a report. A pain score is not a test of toughness or honesty. It is the patient’s report of what they feel at that moment.
The best assessment tool depends on the person’s ability to communicate. A patient who can speak clearly can usually describe intensity, location, and character in their own words. Young children, people with severe dementia, sedated patients, and some critically ill patients may not be able to do this.
In these cases, an observer looks for behaviors such as grimacing, guarding an area, pulling away, restlessness, crying, or difficulty being comforted. Behavioral scores are useful clues, but they do not prove that pain is absent.
A quiet patient may still have severe pain. Healthcare workers should seek information from family or caregivers when appropriate and watch for changes from the person’s usual behavior.
A structured history helps separate different patterns of pain. Burning, tingling, and electric sensations can suggest nerve pain. Cramping may come from muscles or hollow organs.
Sharp pain that gets worse with breathing or movement can point to a different cause than a dull, constant ache. Location matters because pain may travel. Heart problems can sometimes cause discomfort in the chest, jaw, back, shoulder, or arm.
Abdominal pain can shift as an illness develops. Students should learn that sudden severe pain, chest pressure, trouble breathing, weakness on one side, confusion, or pain after major trauma needs urgent attention. A scale number never replaces observation of warning signs.
Good documentation creates a timeline that other clinicians can use. Record the patient’s own words when possible, especially unusual descriptions. Note the site, pattern, factors that worsen or ease the pain, and the effect on sleep, movement, eating, school, or daily tasks.
Then record what was done and when it was done. A later reassessment is meaningful only when it states the new findings and how the patient functioned afterward.
For example, a lower score matters, but it is more useful to know whether the person can take a deep breath, walk safely, or rest. Consistent wording and timing help reveal whether a treatment is working or whether the condition may be changing.