It is important that: the skin manifestations never occur spontaneously but exclusively at such spots at which shearing forces were applied, this means, for instance, areas
[urtikaria.net]
[…] fainting, rapid or weak heartbeat, anxiety, or feeling of "impending doom" flushing, itching, hives, or feeling warm swelling of the throat or tongue, throat tightness, hoarse
[xolair.com]
Water may be placed directly on the skin or a soaked paper towel may be applied.
[md-health.com]