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Pyemotes ventricosus dermatitis, southeastern France.

Del Giudice P, Blanc-Amrane V, Bahadoran P, Caumes E, Marty P, Lazar M, Boissy C, Desruelles F, Izri A, Ortonne JP, Counillon E, Chosidow O, Delaunay P - Emerging Infect. Dis. (2008)

Bottom Line: We investigated 42 patients who had unusual pruritic dermatitis associated with a specific clinical sign (comet sign) in 23 houses in southeastern France from May through September 2007.Pyemotes ventricosus, a parasite of the furniture beetle Anobium punctatum, was the cause of this condition.

View Article: PubMed Central - PubMed

Affiliation: Unité de Maladies Infectieuses et Dermatologie, Hôpital Bonnet, Fréjus, France. del-giudice-p@chi-frejus-saint-raphael.fr

ABSTRACT
We investigated 42 patients who had unusual pruritic dermatitis associated with a specific clinical sign (comet sign) in 23 houses in southeastern France from May through September 2007. Pyemotes ventricosus, a parasite of the furniture beetle Anobium punctatum, was the cause of this condition.

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Organisms involved in transmission of Pyemotes ventricosus dermatitis. A) Common furniture beetle (Anobium punctatum) (5 × 2 mm). B) Nongravid female P. ventricosus mite (210 × 40 μm). C) Confocal laser scanning microscopy (CLSM) image (CLSM Vivascope 1500 microscope; Lucid Inc., Rochester, NY, USA) of a P. ventricosus mite (210 × 40 μm) in its microvesicle. D) Higher magnification of the microvesicle in panel C (light area in the center) (magnification ×4).
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Figure 2: Organisms involved in transmission of Pyemotes ventricosus dermatitis. A) Common furniture beetle (Anobium punctatum) (5 × 2 mm). B) Nongravid female P. ventricosus mite (210 × 40 μm). C) Confocal laser scanning microscopy (CLSM) image (CLSM Vivascope 1500 microscope; Lucid Inc., Rochester, NY, USA) of a P. ventricosus mite (210 × 40 μm) in its microvesicle. D) Higher magnification of the microvesicle in panel C (light area in the center) (magnification ×4).

Mentions: In 2006, we described an outbreak of unusual dermatitis in southeastern France (1). Patients affected had highly erythematous pruritic macules typical of arthropod bites, sometimes associated with a linear erythematous macular tract that we called the comet sign (Figure 1). The cause of this outbreak remained unknown. In May 2007, during an entomologic ecoenvironmental investigation conducted inside the homes of some of these patients, we found wooden furniture, which harbored live furniture beetles (Anobium punctatum) (Figure 2, panel A), and small amounts of wood dust on the floor. Because A. punctatum does not bite humans or cause contact dermatitis (2), it was not considered as the direct causative agent. However, stereomicroscope examination of the wood dust identified the mite Pyemotes ventricosus (Figure 2, panel B). Because Pyemotes spp. can cause dermatitis (3), they were considered as the hypothetical agent causing the eruption. We then conducted an observational and entomologic study of the new cases.


Pyemotes ventricosus dermatitis, southeastern France.

Del Giudice P, Blanc-Amrane V, Bahadoran P, Caumes E, Marty P, Lazar M, Boissy C, Desruelles F, Izri A, Ortonne JP, Counillon E, Chosidow O, Delaunay P - Emerging Infect. Dis. (2008)

Organisms involved in transmission of Pyemotes ventricosus dermatitis. A) Common furniture beetle (Anobium punctatum) (5 × 2 mm). B) Nongravid female P. ventricosus mite (210 × 40 μm). C) Confocal laser scanning microscopy (CLSM) image (CLSM Vivascope 1500 microscope; Lucid Inc., Rochester, NY, USA) of a P. ventricosus mite (210 × 40 μm) in its microvesicle. D) Higher magnification of the microvesicle in panel C (light area in the center) (magnification ×4).
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2630734&req=5

Figure 2: Organisms involved in transmission of Pyemotes ventricosus dermatitis. A) Common furniture beetle (Anobium punctatum) (5 × 2 mm). B) Nongravid female P. ventricosus mite (210 × 40 μm). C) Confocal laser scanning microscopy (CLSM) image (CLSM Vivascope 1500 microscope; Lucid Inc., Rochester, NY, USA) of a P. ventricosus mite (210 × 40 μm) in its microvesicle. D) Higher magnification of the microvesicle in panel C (light area in the center) (magnification ×4).
Mentions: In 2006, we described an outbreak of unusual dermatitis in southeastern France (1). Patients affected had highly erythematous pruritic macules typical of arthropod bites, sometimes associated with a linear erythematous macular tract that we called the comet sign (Figure 1). The cause of this outbreak remained unknown. In May 2007, during an entomologic ecoenvironmental investigation conducted inside the homes of some of these patients, we found wooden furniture, which harbored live furniture beetles (Anobium punctatum) (Figure 2, panel A), and small amounts of wood dust on the floor. Because A. punctatum does not bite humans or cause contact dermatitis (2), it was not considered as the direct causative agent. However, stereomicroscope examination of the wood dust identified the mite Pyemotes ventricosus (Figure 2, panel B). Because Pyemotes spp. can cause dermatitis (3), they were considered as the hypothetical agent causing the eruption. We then conducted an observational and entomologic study of the new cases.

Bottom Line: We investigated 42 patients who had unusual pruritic dermatitis associated with a specific clinical sign (comet sign) in 23 houses in southeastern France from May through September 2007.Pyemotes ventricosus, a parasite of the furniture beetle Anobium punctatum, was the cause of this condition.

View Article: PubMed Central - PubMed

Affiliation: Unité de Maladies Infectieuses et Dermatologie, Hôpital Bonnet, Fréjus, France. del-giudice-p@chi-frejus-saint-raphael.fr

ABSTRACT
We investigated 42 patients who had unusual pruritic dermatitis associated with a specific clinical sign (comet sign) in 23 houses in southeastern France from May through September 2007. Pyemotes ventricosus, a parasite of the furniture beetle Anobium punctatum, was the cause of this condition.

Show MeSH
Related in: MedlinePlus