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Query: UMLS:C0033774 (pruritus)
 14,546 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

This article attempts to cover the more specific pruritic problems encountered in rabbits, rodents, and ferrets. There are certainly other causes of pruritus in these animals. Dermatophytes in guinea pigs are not reported to be pruritic, but because they are pruritic in other species, they should be considered in a differential diagnosis. A cryptococcal dermatitis in a guinea pig that was pruritic has been reported. Although mites were not seen on scraping, the animal was treated for sarcoptid mites and apparently the pruritus lessened. Because the cryptococcis was still present, it is questionable whether it was causing the pruritus. Pruritic ulcerative dermatitis over the back and shoulders has been seen in some lines of rats. Staphylococcus aureus was cultured from many of the lesions. Clipping the toenails on the feet helped lessen the severity of the lesions. Syphacia spp. have been reported in rats, gerbils, and hamsters and should be considered if there is perineal pruritus. MOBS, or "move over buddy syndrome," is seen especially in mice and may be seen in hamsters, gerbils, and rats that are overcrowded or stressed. The lesions are actually bite wounds that have been inflicted around the tail base and the perineum and on the tail, but these wounds can be mistaken for self-inflicted trauma from pruritus. All of the recommended treatments are extralabel, and clients should be informed of this. I have observed a guinea pig become lethargic and anorexic after only one application of a flea powder approved for use in cats. Brushing most of the powder off and offering dandelion greens to stimulate appetite helped. The second dusting was done with the same flea powder diluted with baby powder. Whenever these animals are dipped, it is important to let them dry in a warm, draft-free area. Again, it is important to be aware that the ratio of surface area to body weight is much higher in these small animals than in the species routinely seen in veterinary practice especially to prevent toxicoses from topically applied medications and iatrogenic hypothermia or hyperthermia.
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PMID:Pruritus in rabbits, rodents, and ferrets. 305 47

Pruritic skin diseases in the cat are best approached in a problem-oriented fashion. The presentations of pruritic skin disease in the cat include miliary dermatitis, pruritus of the head, scaling and crusting dermatoses, alopecia, erythroderma and exfoliation, eosinophilic granuloma complex, macular and pustular eruptions, and pruritic nodular dermatoses. There is a specific differential diagnosis for each presentation. A rational diagnostic plan, based on the likelihood of each disease in the differential diagnosis, may be formulated for each presentation of pruritus in the cat.
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PMID:Differential diagnosis of feline pruritus. 305 51

Since December 1981, dermatitis of unknown etiology in form of papular lesions has appeared in fattened pigs in some large herds in the Czech Socialist Republic. Clinical investigations of diseased pigs were performed in a large fattening house D. and in a large production herd of pigs M. in the region with frequent mines (lignite extraction). The diameter of the papules is mostly 3-5 mm, they are not painful when touched, are straggled irregularly, their large numbers are on the upper surface of the body. Papular dermatitis has a chronic course, affecting the gilts and castrated boars from the body weight of 30 kg, irrespective of their nutritional status. The overall health condition of pigs is not impaired and the disease does not cause itch. In the infected herds, there are usually fewer than 30% of pigs suffering from the disease. The incidence of the disease is highest in winter months. It is necessary to distinguish by differential diagnostics: swine pox, parakeratosis of swine, lesions of impetigo contagiosa suum, pustular dermatitis and scab of swine, from rarely occurring skin diseases of swine hypotrichosis cystica suis and demodicosis of swine. Neither did preventive nor therapeutic measures reduce expressively the incidence of skin lesions. We hope that the complex investigation of the internal environment of the infected pigs could help to reveal the pigs sensitive to the infection by this disease.
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PMID:[The clinical course and differential diagnosis of papular dermatitis in fattened pigs]. 309 24

We report a case of a distinctive dermatitis in a dairy worker exposed to Brucella abortus while manually delivering an infected calf. The rapid onset of pruritus, the strict limitation of lesions to the upper extremities, and the negative results on growth of culture for microorganisms make direct bacterial infection an untenable cause in this case. Allergic hypersensitivity is the probable mechanism, manifesting itself initially as contact urticaria. Coincidentally our patient also had systemic brucellosis, the symptoms of which antedated and were unrelated to his cutaneous disease.
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PMID:Contact dermatitis caused by Brucella. 315 85

The lesions of a seasonal dermatitis in sheep occurred mainly on the ventral surface of the animals, but in other respects they resembled those of 'sweet itch' in horses. They were primarily an immediate hypersensitivity response and the circumstantial evidence indicated that they were due to the bites of Culicoides species, possibly C obsoletus.
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PMID:Seasonal allergic dermatitis in sheep. 1107 92

Six hundred and twenty culicoides of five species were collected from a bait horse at Kannot, Israel, between April and September 1986. Seventy-two per cent of the midges were collected from the belly and 27 per cent from the dorsal aspect of the body, ie, the sweet itch summer seasonal recurrent dermatitis (SSRD) zone. Midges were active mainly from half an hour prior to half an hour after sunset. Only Culicoides puncticollis, C imicola and C schultzei group were collected in considerable numbers. While C imicola was present continuously throughout the season, the appearance of the two other species was intermittent. Ninety-five per cent of C schultzei group and approximately 100 per cent of the C puncticollis prefer to land on and most probably bite the belly. Culicoides imicola showed a clear preference for the dorsal ridge which overlaps the (SSRD) itch zone, and 70 per cent of the midges were collected there, while 28 per cent were collected from the belly. A considerably high proportion of the midges of this species were parous, ie, part of the population lived long enough to bite more than once. Skin temperature measurements showed the belly to be the warmest part of the body. Wind speeds of two to three knots reduced the number of midges collected. The findings of this study, together with a previous one (Braverman et al 1983), incriminate C imicola as the likely principal agent of SSRD in Israel.
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PMID:Preferred landing sites of Culicoides species (Diptera: Ceratopogonidae) on a horse in Israel and its relevance to summer seasonal recurrent dermatitis (sweet itch). 321 68

Subjects with positive skin-prick tests to house dust mite (HDM) solution, including those with and without atopic dermatitis, participated in a double-blind, controlled study of the role of HDM exposure in the pathogenesis of atopic dermatitis. HDM solution and diluent control were applied daily to mildly eczematous or clinically uninvolved skin of the antecubital or popliteal fossae, without prior abrasion, for 5 days. Responses were assessed by a clinical grading system and by measurement of area of dermatitis; pruritus was recorded on visual analogue scales. The clinical grading system showed that marked or moderate delayed local reactions developed in one third of patients with atopic dermatitis in response to HDM application to both mildly eczematous and clinically uninvolved skin. Relative to control sites, significant increases in area of dermatitis and degree of pruritus were also recorded in response to HDM application to mildly eczematous sites. Application of HDM solution to normal, unabraded skin of prick test positive subjects without a history of dermatitis, produced pruritus and immediate urticarial responses which were not seen at control sites, findings which demonstrate that HDM antigen may be rapidly absorbed in normal skin. Application of vehicle or antigen solution to which subjects were negative on prick testing, produced no significant local reactions. This study provides objective evidence for a role for cutaneous HDM exposure in the pathogenesis of atopic dermatitis.
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PMID:A study of the role of house dust mite in atopic dermatitis. 328 4

From October 1985 through June 1986, 31 children in a single pediatric practice were treated for perianal signs and symptoms associated with growth of group A beta-hemolytic streptococci from perianal cultures. Signs and symptoms included perianal dermatitis (90%), perianal itching (78%), rectal pain (52%), and blood-streaked stools (35%). Ages ranged from 7 months to 8 years mean 4.25 +/- 1.8 years). There were 24 boys (77%) and seven girls (23%). The 31 cases occurred in 19 families. Intrafamily spread was only to siblings and occurred in 50% of the possible situations. Direct perianal antigen studies had a sensitivity of 89% for predicting positive cultures. Four different T types of group A streptococci were isolated from these cases, but the T type within each family outbreak was identical except in one case. When group A streptococci were found in the pharynx (64% of patients), the T type of the pharyngeal and perianal isolates were identical. Treatment was usually with oral penicillin. Relapses occurred in 39%. Signs of cellulitis were absent in all 31 cases and, therefore, we suggest that the nomenclature for this entity be changed from streptococcal perianal cellulitis to streptococcal perianal disease.
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PMID:Streptococcal perianal disease in children. 331 56

The relationship between contact allergy to formaldehyde and positive patch test reactions to DMDM hydantoin was investigated. 35 formaldehyde-allergic patients were patch tested with serial dilutions of formaldehyde (0.1%-0.3%-1.0% aq.) and DM hydantoin (the non-formaldehyde-containing parent compound of DMDM hydantoin). 21 were also patch tested with MDM hydantoin (1 molecule formaldehyde) in serial dilutions: 7 (33%) reacted to 1 or more concentrations. The other 14 were also tested with DMDM hydantoin (2 molecules formaldehyde) in serial dilutions: 8 (57%) reacted to 1 or more concentrations. Patients patch-test-positive to formaldehyde 0.1% and/or 0.3% tended to show more patch test reactivity to (D)MDM hydantoin than those who reacted only to 1%. Aqueous solutions of (D)MDM hydantoin in concentrations as used in cosmetic products therefore contain enough free formaldehyde to cause dermatitis in a patch test system in some formaldehyde-allergic patients: 12 such patients applied a cream containing 1% DMDM hydantoin to the flexor aspect of the lower arm twice daily for 1 week; 4 (33%) developed dermatitis. The use of a cream containing 0.25% DMDM hydantoin in these 4 patients still caused dermatitis in 1 and provoked itching in another. An increase in the use of DMDM hydantoin in cosmetic products will also inevitable increase the risk of cosmetic dermatitis in consumers allergic to formaldehyde.
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PMID:Patch test reactivity to DMDM hydantoin. Relationship to formaldehyde allergy. 337 26

Cytologic scrapings of skin vesicles from an eight-day-old newborn who had a generalized maculopapular, vesicular and pustular rash contained mycelia and ovoid spores of fungal organisms. The cytodiagnosis of cutaneous candidiasis was confirmed by the study of a direct smear and a skin biopsy. The candidiasis was congenital; the 15-year-old mother had had vulvar pruritus prior to delivery. Since the variable clinical picture of this disease must be differentiated from those of other types of congenital dermatitis, an early cytologic study of skin scrapings may prove useful for its rapid diagnosis and treatment.
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PMID:Congenital cutaneous candidiasis diagnosed in cytologic scrapings. 340 Mar 87


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