Non sedating antihistamines for hives
Hives can also be classified by the purported causative agent.Many different substances in the environment may cause hives, including medications, food and physical agents.The common form of cold urticaria demonstrates itself with the rapid onset of hives on the face, neck, or hands after exposure to cold.Cold urticaria is common and lasts for an average of five to six years.One study showed Balsam of Peru, which is in many processed foods, to be the most common cause of immediate contact urticaria.The rash that develops from poison ivy, poison oak, and poison sumac contact is commonly mistaken for urticaria.
Drug-induced hives has been known to have an effect on severe cardiorespiratory failure.
Taking antihistamines can reduce the response in cases that are annoying to the patient.
This type of hives can occur right away, precisely after a pressure stimulus or as a deferred response to sustained pressure being enforced to the skin.
Welts may be pinpoint in size, or several inches in diameter.
Angioedema is a related condition (also from allergic and nonallergic causes), though fluid leakage is from much deeper blood vessels in the subcutaneous or submucosal layers.