Urticaria is commonly referred to as urticaria, rubella, bumps, or rash (similar in name to rubella, but not the same disease). It is a common skin disease. It is caused by various factors that lead to temporary inflammatory congestion of the blood vessels of the skin and mucous membranes with a large amount of fluid exudation. It causes localized edematous damage. It occurs and subsides rapidly, with severe itching. There may be fever, abdominal pain, diarrhea or other systemic symptoms. It can be divided into acute urticaria, chronic urticaria, angioneurotic edema, and papular urticaria. If you have urticaria, you should stay away from allergens and choose professional medications to treat it.
Urticaria is a common vascular disease of the skin and mucous membranes caused by a variety of different reasons, clinically characterized by limited, temporary, pruritic flushing of the skin and mucous membranes and wind clusters. The pathogenesis can be both immunologic (most commonly IgE-mediated type I allergic reactions) and non-immunologic.
The common causes of urticaria are.
(1) foods and additives.
(2) Medications.
(3) infections.
(4) animals, plants and inhalants.
(5) physical factors.
(6) visceral diseases.
(7) mental factors.
(8) Genetic factors. There are many specific types classified by etiology.
Symptoms
1. The rash is a wind-blown, flushed spot, varying in size and shape. It often occurs suddenly, in batches, and then fades rapidly after a few hours, leaving no trace after fading. However, it can recur;
2.Self-perceived itching, may be accompanied by abdominal pain, nausea, vomiting and chest tightness, palpitations, dyspnea, a few have fever, joint swelling, hypotension, shock, laryngeal edema asphyxia symptoms;
3, the duration of the disease varies, acute urticaria course within 1 month; more than 1 month for chronic;
4.The skin scratch test is positive in some cases;
5.Special types of clinical.
(1) Protein urticaria is an antigen-antibody reaction caused by the absorption of protein directly through the intestinal mucosa.
(2) Cold urticaria, which can be subdivided into familial cold urticaria and acquired cold urticaria, is a physical urticaria caused by cold.
(3) Heat urticaria, which can be further divided into acquired and hereditary, is the appearance of wind masses at the site of contact after exposure to hot water.
(4) Cholinergic urticaria, which is induced by heat, stress and exercise, mostly on the trunk and proximal extremities, with a rash of 1-2 mm in size and surrounded by a red halo.
(5) Solar urticaria, more frequent in women, develops after exposure to sunlight, rash confined to exposed areas.
(6) pressure urticaria, which develops after 4-6 hours of heavy and prolonged pressure, with diffuse, edematous, painful patches at the site of pressure.
(7) Waterborne urticaria, which causes small, itchy clusters around the pores after contact with water and sweat.
(8) seropathic urticaria, which is caused by exposure to allogeneic serum, vaccines, drugs, etc., resulting in an antigen-antibody complex reaction with clinical manifestations of fever, rash, arthritis and lymphadenopathy.
(9) autoimmune progesterone urticaria, which occurs in the pre- and mid-menstrual period, is caused by progesterone.
Preventive and curative measures.
1. Remove or avoid all suspected causes as much as possible.
2, internal antihistamines, corticosteroids for those with systemic symptoms, or symptomatic treatment.
3.Desensitization of allergens that test positive for allergens.
4, there are infections can be treated with antimicrobial agents but not for a long time to avoid dependence.
5, chronic cases can be tried closed therapy, self-blood therapy, acupuncture therapy, oxygen therapy, tissue therapy, sweating and detoxification method.