Eczema Help For Toddler

I would like some much needed help with my just turned 3 year old. She has red patchy, itchy eczema in the folds of her elbows and white patches behind her knees. As a baby she would itch her stomach and body during her sleep. She continues to itch during sleep, but not to the point of bleeding. She kicks her covers off at night. She does seem to be hot. She has had constipation for the past 9 mnths after a long car trip. I have recently started her with NAET treatments, about 1 month ago, but added Sulphur 1 1/2 week ago. Since adding sulphur she has had many temper tantrums and night time terrors as well. She has had these in the past but very few over the period of 3 yrs, but her constipation is so much better! She has always had eczema. I noticed that removing wheat and dairy have helped some too. She is a very determined child, wants her way or gets very upset ..uncontrollable. Some nights she wakes me up around 2am and its till about 5am before she is sound asleep again. Most of the time I have to get her up and walk her outside..she will not let me sit down with her. She has 3 older sisters who end up giving into most of the time. When she is happy she is the most happy child I have and very polite. My husband of nearly 18yrs passed away when she was 18mnths, but I feel like this started very soon after her birth. I would appreciate any recommendations you have. Thank you.