I have experienced similar irritation related to detox. In my case the burning sensation was a combination of infection plus acids stirred up by the detox. To neutralize the acids I will drink 1/2 tsp baking soda and juice of a lemon or a lime. This creates a vichy water with carbonates. Carbonates are made in the pancreas and used to balance acids in the body. The drink can be made with ACV as well.
I ingest a coral calcium product together with cod liver oil. Next I take regular doses of green drinks. I test my ph to keep it within a non acidic range. I also am drinking some anti-oxidant products made from DHLA ( a natural organic bioavailable form of lipoic acid) and nano green tea. One spoon of the nano green tea product is equal to twenty cups of regular green tea. (It has been tested for aluminum and fluorides).
To fight the infection side of the equation I am on a hyssop remedy and a garlic remedy. I am also taking a homeopathic kidney drainage product and smart silver.
So my basic approach is to address the acidity issue with mineralization and the bacteria with anti-infectives. I have also done a few castor oil packs with great success as the CO
is an anti-infective.
As to what you have specifically one cannot say. Only conjecture is possible over the internet. I would recommend a good naturopath familiar with using an organic cell resonant protocol that has proven testing capabilities such as MSA or QRA testing. At minimum I would say your issue is acidity first and possibly some sort of infection next. If it is an infection it could get out of hand. In either case I would seek treatment from a qualified naturopath which is what I did for my condition. Good luck.