I looked on craigslist. There’s a clinic in Riverside that will certify you as being in need of medical marijuana and give you an ID card, for a small fee of $125. They prefer that you have medical records documenting your medical ailment, but that is not strictly necessary.
Then I looked at California laws. I thought that medical marijuana was only for cancer patients. Boy, was I mistaken. The law mentions such serious illnesses as arthritis and migraine.