Three Cases of Prurigo Pigmentosa

Yamasaki, Reiko; Dekio, Satoshi; Moriyasu, Shojiro; Takagi, Kenji

doi:10.1111/j.1346-8138.1981.tb02578.x

Cited by 17 publications

(15 citation statements)

References 7 publications

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“…Nagashima (2) suggested that an environmental contaminant in Japan may be a factor, and that the friction from clothing may act as a non‐specific mechanical stimulus considering the predilection for covered areas and the preponderance in summer. Yamasaki et al (5) also suggested a contact allergic reaction to clothing or other related materials. Since the eruptions primarily involve a covered area of the body, the contact allergy may be triggered by the friction of clothing and break out commonly during adolescence, with a seasonal preference for spring‐summer, when increased sweating occurs.…”

Section: Discussionmentioning

confidence: 99%

Prurigo pigmentosa from contact allergy to chrome in detergent

2001

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Prurigo pigmentosa is a recurrent inflammatory dermatosis characterized by pruritic erythematous papules and reticulate hyperpigmentation that occurs most frequently in spring and summer. The etiology of prurigo pigmentosa remains unknown. Numerous authors have suggested that various contact allergens may be pathogenic or triggering factors, but nearly all attempts to identify an allergen have been unsuccessful. We report a case of prurigo pigmentosa induced by contact allergy to chrome in detergent, supporting the conclusion that contact allergens such as chrome may play a rôle in inducing prurigo pigmentosa.

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Section: Discussionmentioning

confidence: 99%

Prurigo pigmentosa from contact allergy to chrome in detergent

2001

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“…Nagashima [9| suggested that an environmental factor may play a role, more specif ically physical trauma or friction from the clothing. Paraamino compounds used in manufacturing of clothing have also been suspected [10]. Patch tests including Tinopal® [11], a whitener once thought the cause of pigmented contact dermatitis, have been conducted in several series, with no conclusive results [8][9][10][11][12].…”

Section: Discussionmentioning

confidence: 99%

Prurigo pigmentosa

Liu¹,

Wong²

1994

Dermatology

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Prurigo pigmentosa is a rare dermatosis with unknown etiology. It is characterized clinically by severe pruritic red papules and reticulate pigmentation thought to be an entity occurring more commonly in Japan where nearly 200 cases have been reported [1]. Outside Japan, only 7 cases have been described [2–7]. In Taiwan, though geographically close to Japan, no single case of this peculiar disorder has been reported. We herein describe a typical case in a Chinese and review the literature.

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“…However, this entity is not considered to be an infection, and anti bacterial agents are ineffective [6], We have already shown that dapsone has an inhib itory effect on the generation of oxygen in termediates (Ols) from polymorphonuclear leukocytes (PMNs) [7,8] and exerts its anti inflammatory effect by protecting from au to-oxidative tissue injury in some inflamma tory dermatoses [9],…”

Section: Introductionmentioning

confidence: 99%

Prurigo pigmentosa: A Possible Mechanism of Action of Sulfonamides

et al. 1986

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The patient described here had all the clinical features (itchy red papules and reticular pigmentation) as well as the histological findings (lichenoid tissue reactions) of prurigo pigmentosa, a little-known disorder of unknown etiology, and responded well to sulfamethoxazole treatment. In order to investigate the mode of action of this drug and thus the underlying pathogenesis of this dermatosis, the effect of sulfamethoxazole on the production of oxygen intermediates (OIs) was examined both in the cell-mediated system and in the xanthine-xanthine oxidase system. It was found that therapeutic doses of the drug significantly reduced the hydroxyl radical levels, one of the most potent oxidants that might cause tissue injury. These findings suggest the possibility that OIs produced by infiltrated cells are involved in the inflammatory process of prurigo pigmentosa and that sulfonamides exert their anti-inflammatory effects by affecting OI generation which results in protection against lichenoid tissue reaction.

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Three Cases of Prurigo Pigmentosa

Cited by 17 publications

References 7 publications

Prurigo pigmentosa from contact allergy to chrome in detergent

Prurigo pigmentosa from contact allergy to chrome in detergent

Prurigo pigmentosa

Prurigo pigmentosa: A Possible Mechanism of Action of Sulfonamides

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