Symptoms Urticaria is a skin disorder that manifests itself in the following symptoms: Temporary wheals with a diameter of millimeters to centimeters, which recede on their own within minutes to hours. Itching, burning and redness of the skin. Angioedema, which is a swelling of the lower skin or mucosal tissue that may be accompanied by … Urticaria: Causes and Treatment
Symptoms Cholinergic urticaria is a type of urticaria that occurs primarily on the upper body, chest, neck, face, back, and arms. It manifests itself in an initially scattered and then coalescing redness of the skin, itching, burning and a sensation of warmth. At the same time, small wheals form, which are smaller than in other … Cholinergic Urticaria
Physiological background Itch results from activation of specialized afferent unmyelinated C fibers in the skin. These fibers are anatomically identical to those that conduct pain but differ in function and stimulus transmission to the brain. They contain a number of receptors such as histamine receptors, PAR-2, endothelin receptor, and TRPV1, and mediators such as histamine, … Itch
