"As soon as itching starts dampen and fold several times a washcloth. Place it in the microwave as it is quicker or find some other way to heat it. (Tap water is usually not hot enough). The temperature should be hot but not enough to scald the skin and tolerable. Place the hot washcloth directly over the bite. The person will begin to feel a sharp, burning, and stinging pain exactly where the bite occurred. Keep the washcloth over the bite for about one minute while tolerating the pain. The mosquito saliva contains protein left inside the bite and the hot temperature neutralizes the protein which causes the sharp pain."
I have been itch-free for 10 minutes now, which is more than any kind of lotion can do... *rejoices*