Urticaria (L50)
Clinical Information
Angioedema - Swelling involving the deep DERMIS, subcutaneous, or submucosal tissues, representing localized EDEMA. Angioedema often occurs in the face, lips, tongue, and larynx.
Chronic Inducible Urticaria - Chronic urticaria with identified triggering factor which is either physical, e.g., vibratory urticaria, or non-physical, e.g., aquagenic urticaria.
Chronic Urticaria - Wheals (urticaria) and/or angioedema presented with daily symptoms lasting for more than 6 weeks. It may be classified into chronic spontaneous and chronic inducible urticaria depending on whether a specific trigger can be linked to the development of vascular reaction.
Cryopyrin-Associated Periodic Syndromes - A group of rare autosomal dominant diseases, commonly characterized by atypical URTICARIA (hives) with systemic symptoms that develop into end-organ damage. The atypical hives do not involve T-cell or autoantibody. Cryopyrin-associated periodic syndrome includes three previously distinct disorders: Familial cold autoinflammatory syndrome; Muckle-Wells Syndrome; and CINCA Syndrome, that are now considered to represent a disease continuum, all caused by NLRP3 PROTEIN mutations.
Exercise-Induced Allergies - Allergic reactions following a period of exercise. Elevated serum HISTAMINE and TRYPTASE levels and cutaneous MAST CELL degranulation are often associated with post-exertional allergic reactions which sometimes are triggered only in combination with prior consumption of a specific food such as wheat. Allergic symptoms produced post-exercise range from skin eruption, asthma, bronchospasm, and anaphylaxis.
Urticaria - A vascular reaction of the skin characterized by erythema and wheal formation due to localized increase of vascular permeability. The causative mechanism may be allergy, infection, or stress.
Urticaria Pigmentosa - The most common form of cutaneous mastocytosis (MASTOCYTOSIS, CUTANEOUS) that occurs primarily in children. It is characterized by the multiple small reddish-brown pigmented pruritic macules and papules.
Urticaria, Solar - Chromophore-dependent photodermatosis triggered by UV and visible light.
Instructional Notations
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.