Driving Under the Influence of Medical Marijuana in Florida - The Facts Medical marijuana is legal for clients with the list below conditions: Amyotrophic lateral sclerosis (ALS), or Lou Gehrig's disease, Cancer, Crohn's disease, Epilepsy, Glaucoma, HIV/AIDSMultiple sclerosis (MS)Parkinson's disease, Trauma (PTSD)A terminal condition diagnosed by a