Chronic Pain or Intractable Pain
NAS 2017 Report: There is substantial evidence that cannabis is an effective treatment for chronic pain in adults.
The endocannabinoid system (ECS) has a clinically important role in mediation of pain, spasticity, and seizure threshold, among other effects and marijuana has various analgesic components: THC, CBD, terpenoids, and caryophyllene.
Cannabis and Pain: A Clinical Review