Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0042109 (urticaria)
 6,569 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A randomized crossover double-blind study in a selected group of patients with idiopathic urticaria (15 patients; 10 females, 5 males; 20-80 years old) has been performed in order to examine the clinical efficacy of H1 + H2-antagonists in this disease, as compared with the H1-antagonist alone and with placebo. Chlorpheniramine (4 X 4 mg/d) and cimetidine (4 X 400 mg/d) were administered, each of them over 4 weeks, after one week wash-out period. The number of wheals, the time of their persistance as well as the presence of itching were daily registered and then evaluated. The entire group showed no difference between antihistamines and placebo. Nevertheless, 4 patients have registered a definitely better response to the H1-antagonist, 4 other patients responded distinctly better to the combined H1 + H2-treatment and 5 patients showed no preference at all. In a long-term follow up period of 3 months the effect of chlorpheniramine became even better, whereas the response to the combined treatment remained unchanged. It seems that the clinical efficacy of H1 + H2-antagonists is rather moderate in idiopathic urticaria. Nevertheless, in individual cases non-responding to H1-antagonist the combined administration of H1 + H2-antagonists may be more beneficial for the patient.
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PMID:[Management of idiopathic urticaria with H1 + H2 antagonists. A crossover double blind long-term study]. 613 32

Several therapeutic regimes for solar urticaria were evaluated. A short course of PUVA therapy produced a marked increase in the minimal dose of radiation required to produce urticaria in the six patients treated. This objective evidence of improvement was supported by the patients' reports of greatly increased tolerance to sun-exposure. Chlorpheniramine, an antihistamine, produced a slight increase in the minimal dose of radiation necessary to produce urticaria but its effectiveness was limited by side-effects. Indomethacin, an inhibitor of prostaglandin synthetase, produced no beneficial effect.
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PMID:Solar urticaria: treatment with PUVA and mediator inhibitors. 707 82

Sedation is the most frequent side effect of H(1)-antihistamines, and, sometimes, it may be life-threatening for patients. Evaluation of the sedative properties of H(1)-antihistamines is important to improve the patients' quality of life (QOL). Therefore, we carried out a large-scale surveillance quantified through a questionnaire using visual analog scale (VAS) from 1,742 patients. The results showed that the degree of sleepiness caused by some nonsedative second-generation antihistamines, including fexofenadine, olopatadine and cetirizine, was disease dependent. In atopic dermatitis, an unexpectedly low VAS score of sleepiness was obtained for the first-generation antihistamine d-chlorpheniramine, which is similar to those obtained for bepotastine and epinastine. d-Chlorpheniramine also showed a high VAS score in efficacy. Meanwhile, fexofenadine showed a higher VAS score of sleepiness in atopic dermatitis than those obtained in the other allergic diseases including allergic rhinitis, urticaria and asthma. In asthma, a higher VAS score of sleepiness was found for olopatadine, ebastine and cetirizine, when compared with d-chlorpheniramine. On the other hand, bepotastine showed the lowest VAS score for sleepiness. Our findings suggest the existence of unknown factors influencing the sedative properties of H(1)-antihistamines. Therefore, appropriate H(1)-antihistamines may need to be selected, depending on allergic diseases, to improve patients' QOL.
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PMID:Analysis of disease-dependent sedative profiles of H(1)-antihistamines by large-scale surveillance using the visual analog scale. 1859 8

127 patients of urticaria were treated with chlorpheniramine maleate alone and in combination with cyproheptadine hydrochloride, ranitidine and doxepin and levamisole. Chlorpheniramine and doxepin combination showed a satisfactory result in 88.46% of patients. Overall study showed that a combination regimen is better than the antihistaminics alone. Drowsiness was the commonest side effect. Levamisole and chlorpheniramine maleate combination was found to be more effective than the antihimstamine alone.
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PMID:A comparative study of various therapeutic regimens in urticaria. 2095

Chlorpheniramine is a widely prescribed H1-antihistamine for relieving urticaria or histamine-mediated allergic reactions. However, although rare, it may cause immediate hypersensitivity reactions. The diagnosis is usually made by provocation test, but its application is often limited due to comorbidities or potential risk of severe reactions. In those cases, skin tests and basophil activation tests can be considered as additional diagnostic tests for the drug allergy. Here, we report a 33-year-old female with underlying chronic urticaria, who recurrently developed anaphylaxis after chlorpheniramine administration. Intradermal test showed positive responses in the patient at 0.02 mg/mL of chlorpheniramine, but not in healthy controls. Basophil activation test showed significant up-regulation of CD63 and CD203c by chlorpheniramine. The present case reminds the rare but potential allergic risk of chlorpheniramine, and also suggests the potential utility of basophil activation test in making the diagnosis.
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PMID:Chlorpheniramine-induced anaphylaxis diagnosed by basophil activation test. 2624 Jul 95