Cold Urticaria

**Definition:** Various skin flares developing after exposure to cold temperature. While most are characterized by a limited episodic cutaneous condition characterized by URTICARIAL WHEALS, such as in allergic urticaria, other types are more severe and generalized and rarely familial, e.g., cryopyrin-associated periodic syndromes.

**Tree numbers:** - C17.800.862.945.766 - C20.543.480.904.766