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Query: UMLS:C0042109 (urticaria)
 6,569 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The cause of urticaria and angioedema often is difficult to ascertain. In most cases the conditions are transient, but a chronic idiopathic form does occur and may be intractable. Acute urticaria and angioedema usually result from an IgE-mediated mechanism; success in treatment depends on recognition of the underlying factor. Chronic urticaria may ultimately necessitate use of corticosteroids. Hereditary angioedema is easily differentiated from idiopathic angioedema by the family history and absence of pruritus.
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PMID:Urticaria and angioedema. Common clinical problems. 42 57

Results of a study in 62 patients with urticaria and 30 controls, all under 12 years of age, are reported. The study involved history taking and assays of immunoglobulins A, G, M, D, E, of complement fractions C3c and C4 and estimation of C1 estease inactivator activity in the plasma. Acute urticaria is more frequent than chronic urticaria in children, expecially in subjects with atopic diathesis; papular urticaria (or strophulus infantum) is particularly frequent in children under 6 years of age and in the male. Assays of plasma immunoglobulins demonstrated selective deficiency of IgA in two and significant reduction of this immunoglobulin in a further three cases. The mean levels of IgE proved normal in chronic urticaria, raised in acute urticaria, and very high in papular urticaria. Complement assays demonstrated, in one case, a reduction of C3c below 60 mg/100 ml, persisting after the disappearance of urticaria.
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PMID:Pathogenetic factors in utricaria in children. A clinico-experimental study. 85 23

A retrospective study was carried out in 40 infants, age 1 to 24 months, with urticaria. Acute urticaria was seen most frequently (85%), followed by recurrent (10%) and chronic disease (5%). Several clinical features such as frequency of angioedema and hemorrhagic lesions appeared to be specific to urticaria in infants. An underlying cause was identified or suspected in 65% of cases: foods in 25%, and drugs and infections in 37.5%. Under 6 months of age, all infants had acute urticaria and 75% had cow's milk allergy. After 6 months of age, the main causes were drug intake (mostly aspirin and amoxicillin) and/or infections (mainly viral) (50%). Atopy was not overrepresented (20%), although a possible link between atopy and recurrent urticaria was noted. After a follow-up of 2 to 7.5 years, 96% of patients were symptom free. Thus, our results indicate that clinical and etiologic features of urticaria in infants are somewhat different from those of adults and children.
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PMID:Urticaria in infants: a study of forty patients. 235 24

Acute urticaria was seen in a patient following the October 1987 earthquake in Los Angeles, California. The psychological stress of earthquakes may trigger urticaria.
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PMID:Earthquake urticaria. 273 39

Urticaria can be caused by a multitude of factors, both internal (eg, ingested drugs or foods) and external (eg, skin contact, heat, cold). Skin testing, ice-cube testing, skin biopsy, and food-challenge testing are some of the methods that can help link cause and effect. Acute urticaria may require the administration of epinephrine and diphenhydramine or a lowering of the antigen dose in an allergy shot. Chronic urticaria is plainly visible in clinical presentation but is more elusive in diagnosis and treatment. It constantly challenges the physician's investigative acumen.
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PMID:Urticaria--a challenge in diagnosis and treatment. 289 23

One hundred patients with cystic fibrosis were screened for urticaria. The prevalence of urticaria in cystic fibrosis was 16 percent. There were eleven patients with urticaria associated with atopy and five without atopy. Acute urticaria was detected more frequently in the atopic group, and chronic urticaria was more common in the nonatopic group. However, there was no statistically significant relationship between the two groups of cystic fibrosis patients with urticaria.
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PMID:Urticaria in cystic fibrosis. 405 88

Epidemiology of childhood urticaria and especially that of infants is badly understood because of a lack of studies devoted to this age group. A retrospective study of 40 infants that were hospitalised for urticaria has been made to clarify the factors that produce urticaria at that age. Certain clinical signs seem to be more frequent at this age, such as the bruised appearance of the lesions. Acute urticaria is the most frequent form. An etiology has been confirmed or suspected in 2/3 cases: intolerance of cow milk proteins before 6 months, drug and infection causes after 6 months. Prospective studies of infantile urticaria are necessary.
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PMID:[Epidemiology of urticaria in infants]. 826 41

Although acute urticaria is common, its eliciting factors, clinical course and therapeutic responsiveness have not been intensively investigated. We have therefore prospectively studied all patients with acute urticaria attending the department of dermatology (n = 72) and a rural dermatology office (n = 37) during the course of 1 year. After a standardized history and physical examination, patients were randomized into treatment with either loratadine (10 mg/day for 3 days) or prednisolene (50 mg/day for 3 days). All patients were followed up until complete remission. Most patients suffered from moderate (42%) to severe (40%) disease. Possible eliciting factors were identified in less than 50% of the cases. Associated upper respiratory tract infections were found most commonly (39.5%), followed by possibly eliciting drugs, mostly analgesics (9.2%) and suspected food intolerance (0.9%). The course of the disease was self-limited in all cases, the longest episode lasting for 3 weeks. Both treatment regimens were effective in controlling whealing, but in corticosteroid-treated patients, symptoms ceased earlier, with complete remission occurring within 3 days of treatment in 93.8%, compared to 65.9% of patients treated with loratadine (p < 0.001). Acute urticaria is thus frequently idiopathic and only rarely associated with IgE-mediated events. It is, however, largely self-limited, with prompt response to symptomatic treatment.
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PMID:Acute urticaria: clinical aspects and therapeutic responsiveness. 886 88

Acute urticaria represents the most commonly observed skin disorder (35%) presenting in an emergency department. We retrospectively analysed the records of 676 patients admitted for acute urticaria in order to know the particularities and the main aetiologies. The mean age was 28; females being more affected than males. Aetiologies varied according to age; drugs were involved in 50% of patients more than 50-years old and in only 19% of children less than 10 years old. Whilst causes are rarely known in the chronic forms, almost 60% of the acute cases were due to drugs or food. Amongst the former, antibiotics and NSAI were the most frequently met.
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PMID:Particularities of urticaria seen in the emergency department. 942 43

Acupuncture has long been used to treat urticaria in the Asian world. Acute urticaria can be easily and effectively treated with acupuncture. L111 (Quchi), Sp10 (Xuehai), Sp6 (Sanyinjiao), and S36 (Zusanli) are the 4 acupuncture points most commonly prescribed. Chronic urticaria is a challenge for medical therapy. There are at least 6 kinds of acupuncture methods developed to overcome this challenge. The combination of ordinary acupuncture and auricular acupuncture has been observed to be a highly effective cure of chronic urticaria. Acupuncture point injection with thiamine hydrochloride (vitamin B1) is also an effective treatment. However, results of these clinical observations have not been systematically confirmed for lack of a control group and the need for standard classification of urticaria. Although these observational results have clinical limitations, they do offer insight into an alternative to conventional treatment of urticaria. In the future, acupuncture or acupuncturelike techniques may provide an effective alternative for treatment of patients with urticaria, particularly those refractory to medication therapy.
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PMID:Acupuncture treatment of urticaria. 982 74


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