Tamir S, Izrael S, Vaya J: The effect of oxidative stress on ERalpha and ERbeta expression
Guan X, Stoll B, Lu X, Tappenden KA, Holst JJ, Hartmann B, et al
This includes hives caused by the following: stroking your skin (dermographism) this is the most common type of inducible/physical urticaria exposure to cold, cold water and cold objects (cold urticaria) sweating (cholinergic urticaria) direct contact with a substance such as stinging nettles, foods, preservatives, fragrances, plant and animal products, metals and rubber latex (contact urticaria) this is different to dermatitis, which develops hours or days later pressure to your skin this can be an immediate or delayed reaction (pressure/delayed pressure urticaria) exposure to sunlight or to artificial ultraviolet (UV) light (solar urticaria) direct contact of warmth to your skin (heat urticaria) exposing your skin to vibration, repetitive stretching or rubbing (vibratory urticaria) contact with water (aquagenic urticaria)

Commercial patch safety concerns Without clinical trials or regulatory oversight, the safety profile of commercial patches is largely unknown: Ingredient quality : No verification of purity or potency Skin reactions : Adhesives and ingredients may cause irritation or allergic responses Interactions : Herbal components like berberine may interact with medications Undisclosed ingredients : Some patches may contain undeclared substances The MHRA doesnt evaluate these products before they reach the market, and adverse events arent systematically collected or reviewed