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Diphenhydramine reduces itching

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https://www.readbyqxmd.com/read/25941445/tricalm-%C3%A2-hydrogel-is-significantly-superior-to-2-diphenhydramine-and-1-hydrocortisone-in-reducing-the-peak-intensity-duration-and-overall-magnitude-of-cowhage-induced-itch
#1
Alexandru Dp Papoiu, Hunza Chaudhry, Erin C Hayes, Yiong-Huak Chan, Kenneth D Herbst
BACKGROUND: Itch is one of the most frequent skin complaints and its treatment is challenging. From a neurophysiological perspective, two distinct peripheral and spinothalamic pathways have been described for itch transmission: a histaminergic pathway and a nonhistaminergic pathway mediated by protease-activated receptors (PAR)2 and 4. The nonhistaminergic itch pathway can be activated exogenously by spicules of cowhage, a tropical plant that releases a cysteine protease named mucunain that binds to and activates PAR2 and PAR4...
2015: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/23474847/a-novel-topical-formulation-containing-strontium-chloride-significantly-reduces-the-intensity-and-duration-of-cowhage-induced-itch
#2
RANDOMIZED CONTROLLED TRIAL
Alexandru D P Papoiu, Rodrigo Valdes-Rodriguez, Leigh A Nattkemper, Yiong-Huak Chan, Gary S Hahn, Gil Yosipovitch
The aim of this double-blinded, vehicle-controlled study was to test the antipruritic efficacy of topical strontium to relieve a nonhistaminergic form of itch that would be clinically relevant for chronic pruritic diseases. Itch induced with cowhage is mediated by PAR2 receptors which are considered to play a major role in itch of atopic dermatitis and possibly other acute and chronic pruritic conditions. The topical strontium hydrogel formulation (TriCalm®) was tested in a head-to-head comparison with 2 common topical formulations marketed as antipruritics: hydrocortisone and diphenhydramine, for their ability to relieve cowhage-induced itch...
September 4, 2013: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/15926215/antihistamines-in-the-treatment-of-dermatitis
#3
REVIEW
Sari M Herman, Ronald B Vender
BACKGROUND: Atopic dermatitis (AD) is an inflammatory skin disorder that is exceedingly challenging to treat. A prominent feature of AD is chronic pruritus. Early evidence suggested that pruritus in AD was partially due to mast cell release of histamines. Conversely, recent studies do not validate the role of histamine in the pathogenesis of pruritus. Conventional management continues to include the wide use of antihistamines to treat the persistent itch, however, there is an urgent need for therapy which will reduce the severity of pruritus for these patients...
November 2003: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/12387308/possible-role-of-mast-cells-in-cineole-induced-scratching-behavior-in-mice
#4
F A Santos, V S N Rao
We examined the scratch (itch) inducing effect of 1,8-cineole (cineole), a monoterpene oxide present in many plant essential oils and the possible role of mast cells in the response. Subcutaneous injection of cineole (10, 20 and 40 microl/site) or the mast cell degranulating agent, compound 48/80 (25, 50 and 100 microg/site) into the rostral back of mice induced a scratching behavior. This response of cineole as well as that of 48/80 was markedly suppressed in mice subjected to mast cell desensitization by repeated injections of 48/80...
October 2002: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/9728853/oral-antihistamines-reduce-the-side-effects-from-rapid-vancomycin-infusion
#5
RANDOMIZED CONTROLLED TRIAL
C L Renz, J D Thurn, H A Finn, J P Lynch, J Moss
UNLABELLED: Rapid infusion of vancomycin causes histamine-mediated side effects, hypotension, and rash, known as "red man syndrome." In this prospective, randomized, double-blind, placebo-controlled study, we examined the ability of oral antihistamines to attenuate three clinical end points: rash, hypotension, and vancomycin discontinuation, and we compared these findings with those of a similar study using IV antihistamines. Patients (ASA physical status I-III) who required vancomycin prophylaxis for elective arthroplasty received either oral antihistamines (diphenhydramine < or = 1 mg/kg and cimetidine < or = 4 mg/kg, n = 20) or placebo (n = 10) 1 h before rapid vancomycin infusion (1 g over 10 min)...
September 1998: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/1979794/perennial-allergic-rhinitis-clinical-efficacy-of-a-new-antihistamine
#6
REVIEW
B A Berman
Nasal itching, sneezing, and rhinorrhea are troublesome symptoms in patients with perennial allergic rhinitis. Most first-generation H1-receptor agonists achieve a 50% reduction in these symptoms, but their benefits are frequently offset by annoying anticholinergic and sedative side effects. Cetirizine is a major metabolite of hydroxyzine that has little anticholinergic activity and causes significantly less sedation. In addition, it can be given once a day. In placebo-controlled comparisons with terfendadine, both active drugs were comparably effective and significantly better than placebo in relieving sneezing, rhinorrhea, and nasal itching...
December 1990: Journal of Allergy and Clinical Immunology
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