Hello,
I have some of the same problems. I know that I can help you to reduce some of the dire problems you have. Ok.
Patches and other skin problems: Neem oil. Use very little. Apply as a test and see if it does not clear things up for you.
Results should be seen - within 2 weeks!
Burning sensations and bloating: You are not drinking enough water. Non treated water will be the best especially mountain waters with a high ph.
You should be drinking 16oz water per day. Start gradually, until you have a bottle of water besides your bed and you are using bottled water in your cooking.