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PubMed2002

Frequency and etiology of hand and forearm dermatoses among veterinarians.

BACKGROUND: Veterinarians are exposed to a range of skin irritants and allergens, yet few studies have addressed the occurrence of dermatoses among veterinarians. OBJECTIVES: The goals of this study were to determine the frequency of noninfectious hand and forearm dermatoses among Kansas veterinarians, to estimate the role of occupational exposures in the aggravation of such dermatoses, to determine the frequency and nature of infectious dermatoses among veterinarians, and to investigate patterns of glove use. The secondary goals of this study were to collect information about the impact of skin disease on the lives and careers of veterinarians and to provide physicians with a practical approach to the treatment of veterinarians with dermatoses. METHODS: A questionnaire was mailed to all members of the Kansas Veterinary Medical Association. RESULTS: The response rate was 60%. Twenty-four of respondents reported noninfectious, recurrent/persistent hand or forearm dermatoses; 66% were work related. Large animal veterinarians (P =.026) and atopics (P =.009) were more likely than their counterparts to attribute their dermatoses to work-related factors. Thirty-eight percent of respondents had contracted at least one infectious skin disease from an animal. Veterinarians who never or rarely use gloves during obstetric procedures were more likely to report work-related dermatoses (odds ratio, 4.25; 1.78 < OR < 10.07; P <.001) than those who use gloves. CONCLUSION: Veterinarians are affected frequently by infectious and noninfectious dermatoses. Improvement of barrier protection habits during obstetric procedures would likely reduce the frequency of occupational dermatoses among veterinarians.

Adult↗
PubMed1986

Prevalence of probable kerosene dermatoses among ball-bearing factory workers.

The objective of this study was to investigate the prevalence rate of dermatoses among workers in a ball-bearing factory and its possible association with their exposure to kerosene. Two groups of female workers participated in the study. The first group included 79 persons with major kerosene exposure during work, while the second, a reference group, was composed of 263 zipper-manufacturing workers with a similar age distribution, educational background, and income. Dermatologic examinations were used to determine the prevalence rate of hand dermatoses (erythema, scaling, and eczema). In the exposed group 51 persons (65%) had erythema with or without desquamation over the interdigital spaces, 12 persons (15%) had eczematous lesions, 3 persons (4%) had defatting dermatitis, and only 13 persons (16%) were apparently asymptomatic. In the reference group only one person had hand eczema (less than 1%). The difference in the occurrence of dermatoses between the two groups was significant according to the Mantel-Haenszel summary chi-square test. Patch tests on five workers with eczematous lesions revealed one to be sensitive to mercury. The findings indicate that kerosene is a skin irritant. Antirust oil used on the ball-bearings may also contribute to the irritant effect.

Adolescent↗
PubMed1977

Hidrotic ectodermal dysplasia: study of a large Chinese pedigree.

Hidrotic ectodermaldysplasia was found, to our knowledge, for the first time in a Chinese family in Malaysia, and it affected 15 members in five generations. The disease, which is transmitted as a non-sex-linked autosomal dominant trait, presumably originated from southern China. All 15 members had the typical nail, hair, and skin lesions, and we observed three different types of nail defects. Scalp alopeica was more extensive in the female members while keratoderma of the palms and soles was more notable in the male members. The nail and skin lesions also became severer with age. Except for the infectious eczematoid dermatitis present in the propositus, none had other skin or systemic disorders. All were relatively healthy and had normal life expectancies;

Adult↗
PubMed1996

Antifungal pulse therapy for onychomycosis. A pharmacokinetic and pharmacodynamic investigation of monthly cycles of 1-week pulse therapy with itraconazole.

BACKGROUND AND DESIGN: In the treatment of onychomycosis, oral therapies have generally been given as a continuous-dosing regimen. For example, the suggested dose of itraconazole for the treatment of onychomycosis has thus far been 200 mg/d for 3 months. Based on the advances in our understanding of the pharmacokinetics of itraconazole, we investigated the efficacy and nail kinetics of intermittent pulse-dosing therapy with oral itraconazole in patients who were suffering from onychomycosis. Fifty patients with confirmed onychomycosis of the toenails, predominantly Trichophyton rubrum, were recruited and randomly assigned to three (n = 25) or four (n = 25) pulses of 1-week itraconazole therapy (200 mg twice daily for each month). Clinical and mycological evaluation of the infected toenails, and determination of the drug levels in the distal nail ends of the fingernails and toenails, were performed at the end of each month up to month 6 and then every 2 months up to 1 year. RESULTS: In the three-pulse treatment group, the mean concentration of itraconazole in the distal ends of the toenails ranged from 67 (month 1) to 471 (month 6) ng/g, and in the distal ends of the fingernails, it ranged from 103 (month 1) to 424 (month 6) ng/g. At month 11, the drug was still present in the distal ends of the toenails at an average concentration of 186 ng/g. The highest individual concentrations of 1064 and 1166 ng/g were reached at month 6 for toenails and fingernails, respectively. At end-point follow-up, toenails in 84% of the patients were clinically cured with a negative potassium hydroxide preparation and culture in 72% and 80% of the patients, respectively. In the four-pulse treatment group, the mean concentration of itraconazole in the distal ends of the toenails ranged from 32 (month 1) to 623 (month 8) ng/g, and in the distal ends of the fingernails, it ranged from 42 (month 1) to 380 (month 6) ng/g. The highest individual concentrations of 1549 and 946 ng/g were reached at month 7 for toenails and at month 9 for fingernails, respectively. At month 12, the drug was still present in the distal ends of the toenails at an average concentration of 196 ng/g. At end-point follow-up, toenails in 76% of the patients were clinically cured with a negative potassium hydroxide preparation and culture in 72% and 80% of the patients, respectively. There were no significant intergroup differences between the three- and four-pulse treatment groups for the primary efficacy parameters. The drug was well tolerated with no significant side effects in either patient group. CONCLUSIONS: Following pulse therapy with itraconazole (400 mg/d given for 1 week each month for 3 to 4 months), the drug has been detected in the distal ends of nails after the first pulse, and it has reached therapeutic concentrations with further therapy. After stopping the last pulse, the drug remains in the nail plate at levels above 300 ng/g for several months. Clinical cure rates between 76% and 84% and negative mycological examination findings between 72% and 80%, respectively, were observed in toenail onychomycosis. The data suggest that pulse therapy with itraconazole is an effective and safe treatment option for onychomycosis.

Aged↗
PubMed1998

Solar urticaria. A report of 25 cases and difficulties in phototesting.

BACKGROUND: Solar urticaria is a rare photosensitive disease, and its differential diagnosis with respect to polymorphous light eruption is sometimes difficult. We report our experience with 25 cases of solar urticaria and discuss the pitfalls in phototesting such patients. OBSERVATION: The most important locations in this patient series are the V of the neck and the arms, which are similar to those of polymorphous light eruption. In all of the patients, however, the lesions appeared within 30 minutes of sun exposure or phototesting and disappeared within 24 hours. Notably, 12 (48%) of the patients had a history of atopy. Phototesting helps confirm the diagnosis, but, in some patients, this was difficult. CONCLUSIONS: A negative phototest result from a single light source does not necessarily exclude a diagnosis of solar urticaria. In patients in whom phototesting elicits negative reactions, other light sources should be used, and, if the phototest result is still negative, a provocative test with natural sunlight should be done. Histamine1-receptor antihistamines are a useful first-line therapy, although more severely affected persons may require prophylactic courses of phototherapy or photochemotherapy. The main problem is maintenance treatment.

Adolescent↗
PubMed1998

Idiopathic recurrent palmoplantar hidradenitis in children. Report of 22 cases.

BACKGROUND: Idiopathic recurrent palmoplantar hidradenitis (IRPH) is characterized by tender erythematous plaques and nodules on the soles and, less often, the palms of young patients. To date, 10 cases of IRPH have been documented in the literature. OBSERVATIONS: We describe 22 pediatric patients with characteristic cutaneous and histologic findings of IRPH. Their mean age was 6 years (age range, 1.5-15 years). The onset of the disease clustered in 2 peaks, in autumn and spring. All patients had complete resolution of their lesions within 3 weeks, in 16 cases without any treatment. Ten of the 22 patients experienced more than 1 episode of IRPH. CONCLUSIONS: Our study represents the largest number of cases of IRPH collected to date. Based on our data, the clinical picture is so characteristic that a histopathologic examination may not be necessary in every case. We suggest that there is a seasonality in the occurrence of this always benign and limited disease.

Administration, Cutaneous↗