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This is a shortened version of the twelfth chapter of the ICD-9: Diseases of the Skin and Subcutaneous Tissue. It covers ICD codes 680 to 709. The full chapter can be found on pages 379 to 393 of Volume 1, which contains all (sub)categories of the ICD-9. Volume 2 is an alphabetical index of Volume 1.
Chronic spontaneous urticaria, despite its cause being unknown, is linked to a higher prevalence of autoimmune diseases, and is often worsened by triggers like stress, infections, certain foods, or nonsteroidal anti-inflammatory drugs. The hives and angioedema seen in CSU is thought to be linked to the degranulation of skin mast cells.
However, the understanding of urticaria as an autoimmune condition is a relatively recent development in medical history. [14] The term autoimmune urticaria refers to a subset of chronic spontaneous urticaria (CSU) cases where the immune system appears to play a significant role. This understanding began to evolve in the mid to late 20th ...
The dermis is the layer of skin between the epidermis and subcutaneous tissue, and comprises two sections, the papillary dermis and the reticular dermis. [10] The superficial papillary dermis interdigitates with the overlying rete ridges of the epidermis, between which the two layers interact through the basement membrane zone. [ 10 ]
Urticarial vasculitis (also known as "chronic urticaria as a manifestation of venulitis", "hypocomplementemic urticarial vasculitis syndrome", "hypocomplementemic vasculitis" and "unusual lupus-like syndrome") [1] is a skin condition characterized by fixed urticarial lesions that appear histologically as a vasculitis.
Dermatographic urticaria is sometimes called "skin writing", as it is possible to mark deliberate patterns onto the skin. The condition manifests as an allergic-like reaction, causing a warm red wheal to appear on the skin. As it is often the result of scratches, involving contact with other materials, it can be confused with an allergic ...
784.60 Symbolic dysfunction, unspecified; 784.61 Alexia and dyslexia; 784.7 Epistaxis; 784.8 Hemorrhage from throat; 784.9 Other symptoms involving head and neck 784.91 Postnasal drip; 785 Symptoms involving cardiovascular system. 785.0 Tachycardia; 785.1 Palpitations; 785.2 Murmur of heart, undiagnosed; 785.3 Other abnormal heart sounds; 785.4 ...
Cholinergic urticaria may significantly impair quality of life, especially in relation to normal day to day activities. It is caused by an overreaction of the immune system to the release of histamine, mast cells, and other chemicals in response to the small nerve fibers throughout the body due to the increase in body temperature being allergic ...