To obtain a medical marijuana card in Colorado, you must be at least 18 years old, be an in-state resident, and be diagnosed with at least one of the qualifying medical conditions listed in the program. You must be diagnosed by a licensed physician and receive a physician certification to send in with your MMJ card application.   The qualifying medical conditions are listed below:    AIDS (Positive Status) Cachexia Cancer Glaucoma HIV (Positive Status) Persistent Muscle Spasms Post Traumatic Stress Disorder (PTSD) Seizures Severe Nausea Severe Pain If you are not yet 18, you can still be granted a medical card in Colorado if you have one of the debilitating health conditions listed. However, the minor must see two different physicians and submit two physician certifications to be approved.