The Stoplight Pain Scale™ is free to use.
You can download and use the Stoplight Pain Scale™ under the Creative Commons Attribution Non-Commercial No-Derivatives license (details).
The Stoplight Pain Scale™ trademark and copyright is owned by Booster Shot Media Inc. and Amy Drendel DO.
If you want to use it for some purpose not covered the license, you will need to contact us for special permission from us.