The Devil reversed in your health reading signals that now is not the time to push yourself to the limits. Rest when you need it, and know that everything will be ok. If you take care of yourself and remain aware of the warning signs, you will be able to push through. With effort, you will come out the other side healed and whole.
If you are struggling with an illness or an injury, the Devil reversed can indicate that you are pushing yourself too far and will need to take a break. The Devil reversal meaning in health also suggests that you have been working hard, but the effects of it are not as good as you expected. Try to relax and enjoy the time off and you will pick up where you left off.