Perhaps its bad food combining or too much fat. There's a lot of fat in junk foods and it can slow your detoxification process, same thing with nuts, oils and avocados, that could be why it keeps getting better and flaring up because your body is still behind and processing these things.
Try sticking to clean water, green smoothies, fruits and salads with no vinegar, onions, garlic or oils and give your body a chance to get ahead. My skin is super sensitive too, if i eat any of those things i get little breakouts or redness. But the longer you are raw the better it gets, your liver is probably just behind right now, because of all the extra hormones and toxins over the years that are built up.
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Starting weight: 138lbs
Current Weight: 124bs Made goal!
"Health is a natural state. If you have sickness, remove the causes. Health is the easiest thing on the planet. Eat fruits and vegetables, the most rewarding food there could ever be" - Dr. Graham