Personally, I would not recommend signing yourself up for a drug habit (pharmaceutical or otherwise) if there are other options you haven't tried for treating your condition. Daily consumption of cannabis can have side effects such as serious cognitive impairment, social withdrawal and, eventually, depression. It can be
useful in some instances but a lot of people jump straight into getting a cannabis card when there
are other options they could be trying such as diet, herbal medicine or homeopathy. Homeopathy is particularly useful if you don't have the patience for major lifestyle changes because you only take it a few times, although going that route you should consult a professional homeopath instead of attempting to self-diagnose, unless you're extremely motivated. Otherwise, Indica is the variety you want for pain relief and the bonus is that it doesn't damage short term memory as much as Sativa strains. Edibles also have more of a full body effect so they are appropriate for pain management. The drawback with edibles is that they can really screw up motor coordination and get you so high that it is hard to function. Again, I'm not trying to preach, but it sounds like you're on the fence so I thought it might be helpful to provide a complete picture of what you might be signing yourself up for.