Insomnia doesn't qualify in CO. Cachexia (rapid weight loss) is a symptom of many eating disorders, and does qualify. Chronic pain certainly qualifies.

That said, there are dozens of scummy docs who will approve anyone for a few dollars. I agree with the previous poster, though; if you have insurance, go see your primary care physician. Even if he won't recommend MMJ, you can use those records to get approved elsewhere.