Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0033774 (pruritus)
 14,546 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Within the framework of a field study, Loratidine (Lisino) was administered to a total of 5,806 patients suffering from pruritic dermatological disorders, i.e. urticaria, neurodermatitis and eczema. As a guideline for the duration of the treatment, a period of three weeks was selected; however, many patients showed a response in a shorter time. The standard dose of loratidine was one 10-mg tablet a day. At the end of the treatment period, 69.6% the urticaria patients were free from pruritus, and 77.6% were free from wheals. In the case of the eczema patients, 47.6% were pruritus-free, while the remaining patients all showed some improvement. In the majority of cases pruritus decreased appreciably after only one hour, but at the latest on the first day of treatment. Treatment with loratidine was tolerated without side effects by 5,593 patients (96.3%).
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PMID:[Treatment of pruritic skin diseases with loratadine. Results of an open multicenter study]. 182 71

Allergic reactions have been described as an occupational hazard among nurses and pharmaceutical workers who handle psyllium-containing laxatives. This study reports the case of a 38-year-old female nurse who ingested a bowl of psyllium-containing Heartwise Cereal (Kelloggs, Battle Creek, MI) and 25 minutes later developed severe systemic anaphylaxis manifested by hypotension, a feeling of constriction in the throat, hoarseness, dyspnea, wheezing, generalized pruritus, urticaria, and vomiting. She was treated with epinephrine, normal saline, diphenhydramine, and methylprednisolone, and recovered completely. Subsequent IgE immunoblot assay was strongly reactive to psyllium. Ingestion of psyllium-containing breakfast foods by sensitized individuals can be associated with life-threatening systemic anaphylaxis.
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PMID:Systemic anaphylaxis after ingestion of a psyllium-containing breakfast cereal. 186

Intravenous fluorescein angiography is a commonly performed and extraordinarily valuable diagnostic procedure. The frequency of adverse reactions after angiography has varied considerably in previous reports. In a prospective study of 2789 angiographic procedures in 2025 patients, the authors found that the percentage of adverse reactions depended strongly on the patient's angiographic history. Overall, adverse reactions followed 4.8% of the angiographic procedures. These reactions included nausea (2.9%), vomiting (1.2%), flushing/itching/hives (0.5%), and other reactions (dyspnea, syncope, excessive sneezing) (0.2%). No cases of anaphylaxis, myocardial infarction, pulmonary edema, or seizures occurred. The percentage of reactions was 1.8% for patients who had had previous angiography without ever having had an adverse reaction. In contrast, the percentage of reactions was 48.6% for patients who had had an adverse reaction to angiography previously.
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PMID:Frequency of adverse systemic reactions after fluorescein angiography. Results of a prospective study. 189 Dec 25

Allergic and asthmatic individuals may have exercise-induced respiratory problems and sports may induce, in some cases, allergic problems. Exercise-induced asthma (EIA) differs from common asthma only in its causative factor. It is a typical asthmatic attack following physical exercise, lasting 5-10 min, most often in cold and dry weather. The prevalence in asthmatic children is high, in adolescents not yet firmly established. Cold air and/or hypertonic bronchial challenges during exercise are discussed as pathophysiological mechanisms. Nonpharmacological and drug treatment of EIA must preferentially be preventive. Exercise-induced anaphylaxis (urticaria, pruritus, edema) occurs mainly in children, triggered by exercise alone or by the combination of sensitizing food and exercise. Antihistamines before exercise are recommended. The use of sport equipment can induce contact dermatitis in rare cases.
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PMID:Sports and allergy. 189 91

While the pathomechanisms of respiratory atopy are rather well established, the role of IgE-mediated hypersensitivity in the elicitation and maintenance of eczematous skin lesions in atopic eczema is still controversial. Few diseases are characterized by an equally elevated production of IgE antibodies as atopic eczema. Many authors, however, regard this only as epiphenomenon. On the other hand, there is clearcut clinical evidence for exogenous elicitation of atopic eczema by contact with aero or food allergens. A variety of hypotheses may help to explain the participation of IgE antibodies in the induction of eczema: vasoactive mediators secreted by skin mast cells or basophils after allergen contact may produce itch, contact urticaria or a 'late-phase-reaction' with consequent eczematous skin changes further maintained by scratch responses. Recent investigations stress a possible role of Langerhans cells in the epidermis with a low affinity receptor for IgE with possible function for antigen presentation, mediator release or regulatory interactions. Certain cytokines such as interleukin-4 or gamma-interferon are able to enhance the expression of the IgE-receptor on the surface of Langerhans cells. IL-4 and gamma-interferon act synergistically in this respect on Langerhans cells, contrary to B cells. Furthermore lymphocytes may act directly via certain cytokines (e.g. histamine releasing factor, chemotactic factors etc.) on mast cells or eosinophil granulocytes in a proinflammatory sense. Eosinophils seem also to be involved in the inflammatory response in atopic eczema by releasing products such as major basic protein (MBP) or eosinophil cationic protein (ECP) which has been found to be elevated in severe atopic eczema.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Atopic eczema, Langerhans cells and allergy. 193 74

Components in the insect venom and probably also in their saliva may have direct toxic effects or may cause sensitization and may result in allergic reactions to subsequent stings. In Denmark, only the stings of honey bees and wasps (yellow jackets) are of clinical significance and it is important to be aware that these insects contain separate allergenic components. Clinical manifestations following stings are observed from all of the organ systems on the whole. The commonest are itching of the skin, urticaria, possibly angioedema and slight generalized symptoms with vertigo, headache and fatigue. Life-threatening reactions may also occur and one or two fatal cases are registered annually in Denmark. It may be difficult to decide whether an allergic or a toxic reaction is involved on the basis of the symptoms. Possible IgE-sensitization must therefore be assessed by means of a prick test and measurement of specific IgE. The main treatment in cases of acute systemic reactions is adrenaline which may possibly be supplemented with antihistamine and corticosteroid. In cases of massive local reactions and urticaria, antihistamines will, as a rule, prove sufficient. Hyposensitization with insect venom preparations eliminates the future risk for systemic insect sting reactions practically entirely and this must be recommended for patients with demonstrated IgE-sensitizing and generalized reactions. At present, treatment should be continued for three to five years and protection lasts for a series of years after cessation of treatment.
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PMID:[Allergy to insect stings]. 194 33

Pruritus is a common symptom associated with chronic renal failure (CRF). But increased plasma histamine levels and skin mast cell proliferation previously reported in these patients did not correlate with the intensity of the pruritus. Since increased mast cell releasability was described in chronic idiopathic urticaria, we attempted to examine whether this mechanism could explain pruritus in patients with CRF. Twenty-five patients with end stage renal failure were skin tested with histamine, codeine, and compound 48/80. There were nine patients on continuous ambulatory peritoneal dialysis, eight patients on hemodialysis, (tested both before and after dialysis) and eight patients with advanced CRF. Wheal area after intradermal injection of three concentrations of the above substances was measured. In general, the wheal areas in all patients with CRF were either similar to or smaller than those of the control group who were without renal impairment. In conclusion, patients with CRF with or without dialysis therapy demonstrated unchanged or decreased skin test responses to histamine, codeine, and compound 48/80. Increased mast cell releasability cannot explain the pruritus in patients with CRF.
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PMID:Cutaneous responses to histamine, compound 48/80, and codeine in patients with chronic renal failure. 195 8

We report here on 2 patients with adrenergic urticaria and adrenergic pruritus, respectively. The lesions and features developed during phases of stress and during the attacks were associated with an increase in the plasma concentrations of noradrenalin, adrenalin and prolactin. The dopamine plasma level was elevated only in the case of adrenergic urticaria. The symptoms could be reproduced by intradermal injection of adrenalin and noradrenalin and treated successfully with propanolol, a blocker of beta-adrenergic receptors. Adrenergic urticaria is a rare but distinct entity, which has to be separated from cholinergic urticaria. Adrenergic pruritus seems to be a minor variant of adrenergic urticaria.
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PMID:Adrenergic urticaria and adrenergic pruritus. 196 85

Polyfepan, an enterosorbent, was used in the treatment of 96 dermatologic patients. The treatment proved to be effective in those with toxicoderma, secondary xanthomatosis, porphyria cutanea tarda, skin itching, and urticaria, particularly in the cases when toxic exposures and gastrointestinal conditions contributed to the disease pathogenesis. Polyfepan enterosorption is harmless, well-tolerated, and simple.
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PMID:[The use of the enterosorbent polifepan in the combined treatment of patients with dermatoses]. 209

147 hemodialyzed patient were studied for the presence of allergic reactions related to the dialytic treatment. Total IgE and specific IgE to common inhalants, ethylene oxide and phthalic anhydride were determined in all patients. The same determinations were also performed in two control groups. Specific IgE to ethylene oxide were detected in 7 sera. Among these 6 had a high total IgE level and 2 had a positive Phadiatop. Only 3 among the 7 positive patients had adverse reactions related to the hemodialysis (one suffered from itching, one from urticaria and the third from angioedema and hypotension). The resolution of the symptoms was obtained utilizing a gamma-rays sterilized filter. Therefore ethylene oxide sensitization may be a cause of some problems during hemodialysis. We couldn't find a relationship between atopic status and sensitization to ethylene oxide in as much in only 2 out of 7 patients sensitized to ethylene oxide, specific IgE to common inhalants were detected.
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PMID:[Sensitization to ethylene oxide: a possible cause of reactions in hemodialysis patients]. 210 17


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