Ailments and medication impeding spiritual growth?

I wonder if anyone has any points of view or intuitions about the effect of certain physical ailments and medicines on spiritual growth? I'm particularly interested in knowing how fused vertebrae, fibromyalgic pain, insomnia, and the hard medication related to these conditions might hamper a person's development? Some of the medicines given to cure severe insomnia include benzos (such as Lunesta) and small amounts of antipsychotics (Seroquel) and tricyclics (the old fashioned antidepressants such as Elavil). Medicines for nerve pain (Lyrica) and muscle relaxants (Soma) sometimes help to relieve muscle cramping and pain but are pretty potent - one makes you numb and the other is categorized as a narcotic. I'm sure people with other conditions are worried about these things too. Unfortunately these conditions are hard or even impossible to get out of, and most treatments or herbal remedies are useless. The case of insomnia is a tough one when related to fibromyalgia, since the nervous system doesn't shut down during the night as it should normally do. Fused vertebrae mean that the spine is immobile and so there is no doubt a lot of stagnated energies. I am asking from the point of view of someone who doesn't have money to pay for energy work. Thank you :-)