Pain scores are tools used to assess and quantify a patient’s subjective perception of pain, enabling consistent monitoring and treatment decisions.

• Scale: 0–10
• 0 = No pain, 10 = Worst imaginable pain
• Use: Most commonly used in adults
• Advantages: Quick, easy to administer

• Description: 10 cm line with endpoints “No pain” and “Worst imaginable pain”
• Scoring: Measured in mm from “No pain” end
• Use: Clinical trials, sensitive detection of changes
• Limitation: Requires patient comprehension and fine motor skills

• Options: No pain, Mild, Moderate, Severe, Very severe, Worst possible
• Use: Suitable for elderly or those with low numeracy
• Advantage: Simple and intuitive

• Visual: Series of faces from happy (0) to crying (10)
• Use: Pediatric patients, language barriers, cognitive impairment
• Aligned with: 0–10 Numeric Rating

• Components: Face, Legs, Activity, Cry, Consolability
• Score range: 0–10
• Use: Infants, non-verbal, sedated patients
• Observational tool: Based on behavior

• Domains:
  1. Facial expression
  2. Upper limb movements
  3. Compliance with ventilation
• Use: ICU, sedated/ventilated patients