To qualify for medical marijuana in Massachusetts, patients must have a licensed physician diagnose them with one of several severe medical conditions, including cancer, glaucoma, HIV/AIDS, hepatitis C, ALS (Lou Gehrig’s disease), Crohn’s disease, Parkinson’s disease, and multiple sclerosis. The Department of Public Health may also approve additional conditions. Registering with the Department of Public Health and obtaining a Massachusetts Medical Marijuana Card from EZMedcard grants patients access to medical marijuana treatment. Once registered and approved, patients can purchase up to 10 ounces of usable marijuana per month from state-licensed dispensaries. Patients can also designate a personal caregiver to purchase medical marijuana.