Headaches, depression, extreme fatigue and strong emotions, especially anger can all be symptoms of die off. As the parasites die they release a lot of toxins. If your body's systems of elimination are already over worked or compromised, then die-off can be brutal. Often, something as simple as an enema or an Epsom salt flush of the bowels can bring almost immediate relief. A warm bath with Epsom salt and baking soda will help too, but avoid an extremely hot bath when you are detoxing.
If you have a free morning or afternoon try this, take a dose of Epsom salt (!-4 teaspoons) in some juice. It tastes vile, but it works. Prepare a comfortably warm bath with about two cups of Epsom salt and a cup of baking soda. Make a quart of fresh lemonade with fresh lemons and just enough sweetener to make the drink appealing. Rest in the water for 30-45 minutes adding hot water as needed. Keep sipping the lemonade. Hopefully, your tummy will be rumbling by the time you get out of the tub and you will have some liquid bowel movements. Try and lie down as much as you can and practice deep breathing and conscious relaxation. All of this will help your body eliminate the toxins caused by die-off.