As I mentioned, curcumin is a broad spectrum detoxer. If you don't have support for other elements of detoxing, you could potentially be mobilizing toxins and have symptoms when they get stuck without the ability to be released fast enough.
Learner1, thanks for your comprehensive explanation. My doctor and I have discussed collaborating with an integrative medicine specialist soon. I found a really good page that explains that stuff you've been talking about very well:
http://www.inl.asia/resources-main-navigation-bar/the-liver-a-detoxification-part-2
It appears curcumin inhibits phase I and induces phase II detox. It puzzles me that it would give me symptoms because I drink alcohol every night (just a couple of red wine servings with dinner) with no ill effect (have for 13 years after I began doubting a CFS diagnosis and also started regularly exercising with no PEM). In fact during the past few years when I was feeling much better on occasion I consumed a stupid amount of alcohol to the point of getting serious hangovers, but this had no impact on me ME cluster of symptoms. Alcohol tends to even ease some of my IBS type symptoms.
I attribute my recent worsening to disruption to my sleep because of my recent shared custody of my 2 year old. I figured if I addressed inflammation through supplements it would counteract inflammation resulting from sleep disruption.
Maybe there is an adrenal fatigue aspect. I also think this because I get better as the day goes, so there may be a low cortisol aspect. In fact when I consume alcohol at lunch time (work meeting! I know how this all sounds I'm not an alcoholic I assure you!) I get severe brain symptoms which slowly go away if I drink gallons of water. But I can drink after 6 pm no problem. I know I have more cortisol as the day goes because my head gets sharper as the day goes. When I wake up in the morning I have an IQ of 3 till maybe lunch time. And I work in engineering.