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Autoimmune urticaria is characterized by the presence of autoantibodies, which are antibodies that the immune system mistakenly produces against the body's own cells. In the case of autoimmune urticaria, these autoantibodies primarily target the high-affinity IgE receptor (FcεRI) on mast cells and basophils, or less commonly, IgE itself. [22]
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.
An immune system disorder but not autoimmune. Idiopathic giant-cell myocarditis: No consistent evidence of autoimmune cause though the disease has been found comorbid with other autoimmune diseases. [124] Idiopathic pulmonary fibrosis: Autoantibodies: SFTPA1, SFTPA2, TERT, and TERC. IgA nephropathy: An immune system disorder but not an ...
The condition is caused by an overreaction of the immune system to the release of histamine and other chemicals in response to the increase in body temperature. This results in the characteristic red, itchy, and sometimes raised bumps or welts on the skin that are associated with hives.
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.
PLAID syndrome is an inherited condition characterised by antibody deficiency and immune dysregulation, first described in 2012. The name is an acronym of "PLCG2-associated antibody deficiency and immune dysregulation". It is characterised by cold-induced urticaria, autoimmunity, atopy and humoral immune deficiency. [1]
Hives can also be classified by the purported causative agent. Many different substances in the environment may cause hives, including medications, food and physical agents. In perhaps more than 50% of people with chronic hives of unknown cause, it is due to an autoimmune reaction. [7] Risk factors include having conditions such as hay fever or ...
Autoinflammatory diseases are a separate class from autoimmune diseases; however, both are characterized by an immune system malfunction that may cause similar symptoms, such as rash, swelling or fatigue. However, the main source of the diseases are different.