Hello there, over the past few weeks my legs have been breaking out at hives. It only happens at night and at first it was only on the tops of my thighs, but now it s my whole thigh and down to my ankles as well. The bedding has changed, as I ve had to change bedrooms due to extenuating circumstances, but even then it doesn t happen in the morning. The only trigger that I ve noticed has been goosebumps, but like I said, it only happens at night.