Has anyone here experienced die-off (a herxheimer reaction) when going on the Atkins "diet"? If so, what were your symptoms? Since I started, I have the admit the headaches and brain fog are significantly lessened, I mean to a great degree, but I've since developed: 1. Something like a cold but it's not, involving extra swollen glands, body aches, muscle weakness, runny nose, sneezing, minor congestion, VERY run down, lingering for days on end and no change in the way I feel from one day to the next, not even while using Zicam (zinc in the nose); 2. HIVES!! Weird. On my left wrist and between my eyebrows!