Opinions on urticaria "fixes"

HI, new here and was hoping to pick some of your brains re urticaria relief. Keeping it short I have suffered for approx 6 years, the urticaria used to only come in the summer months and vanish for the remaining 8-9 months. I presumed it was just the heat or pollen. I have tried herbal remedies, acupuncture, normal medicines and the usual anti histimines. I have undergone several allergy tests via health shops and a dermatologist but nothing conclusive.
This year my rash started in September and is still present so I am even more confused. Did an internet search and have seen solutions advertised by Kate Andrews and a Doctor Levin. Has anyone tried these and did you have any success? They seem very optimistic re results etc.