Over the past decade, the use of marijuana has been increasingly recognized to treat a range of problems that are ineffectively treated with other drugs and therapies. These conditions include, but are not limited to:
- Chronic pain
- Nausea (including nausea associated with chemotherapy)
- Multiple sclerosis
- Glaucoma
The support of physicians and patients who have found marijuana to be effective in helping with symptoms of these conditions has led some jurisdictions to allow the use of marijuana under the prescription of a physician for a recognized condition.
Many other marijuana users continue to self-medicate using marijuana and other drugs illegally.

