There is a medicine that helps and I'm living proof, it's Gabapentin and/or Neurontin. As long as I take one before I shower I will not sting. This medicine works better and faster than Benadryl. I found out about Gabapentin by accident. I had injured my right hip very badly and was having severe sciatic nerve pain and was put on Gabapentin and my itching/stinging was gone. There is hope. Talk to your doctor. Never take a hot shower, it will make it worse. Yes cool air does help but for me it does not stop it fast enough. From someone who lives in middle Georgia and the humidity is a killer, I have opted for the meds.