[Association between chronic urticaria and Helicobacter pylori].

Background: Chronic urticaria is a multifactorial disease classified in three main groups: mechanical, autoimmune and idiopathic. So far we don't know the mechanisms that produces it, there are different theories and one of them is the presence of Helicobacter pylori.

Objective: To establish the relation between chronic urticaria and Helicobacter pylori trough endoscopic and histopatological studies.