Dietary intolerances to fructose, fructans and FODMAPs (Fermentable Oligosaccharides, Disaccharides, Monosaccharides And Polyols) are common, yet poorly recognized and managed.
Can dietary fructose intolerance cause urticaria?
No, according to a large study of 1,300 patients. See table 1, linked below: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3672687/. There was no statistical difference in the reported skin symptoms.