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- W1998605110 abstract "A 32-year-old man was seen in January 1997 for a skin eruption which had appeared 2 months earlier. He was in good health and was not taking any drugs. He had not left town and denied any other symptom except a short, flu-like episode 2 months earlier. On examination, he showed multiple, papular, scaly and necrotic lesions over the trunk, arms ( Fig. 1), and thighs. The face and the mucosae were spared. No lymphadenopathy was evident, and the liver and spleen were not palpable. Figure 1Open in figure viewerPowerPoint Scaly and necrotic papules on the arm Routine laboratory tests were insignificant. Histopathology of a papular lesion of the arm showed a thick scaly crust overlying a necrotic epidermis and a lichenoid infiltrate of lymphocytes and neutrophils ( Fig. 2). Extravasation of red blood cells and endothelial swelling of the small superficial vessels were also present. Figure 2Open in figure viewerPowerPoint Histopathology showing a lichenoid infiltrate of lymphocytes and neutrophils with a thick scaly crust and necrosis of the epidermis (hematoxylin and eosin, ×100) A diagnosis of subacute pityriasis lichenoides (PL) was made, and treatment with 500 mg/day azithromycin, 3 days a week for 1 month, was prescribed without any benefit. Enzyme-linked immunosorbent assay (ELISA) for Toxoplasma gondii showed immunoglobulin G (IgG) 150 (n.v. <10) and IgM 1.35 (n.v. <0.65). Diagnosis of recent toxoplasmosis prompted an ocular examination which excluded any eye involvement. A specific treatment with spiramycin, 3,000.000 U twice a day for 2 months, was given. The patient underwent a complete resolution of skin lesions which healed leaving atrophic and hyperpigmentary signs ( Fig. 3). At the end of therapy, ELISA was still positive for both IgG and IgM. Spiramycin was changed to trimethoprim–sulfamethoxazole, 800–160 mg twice a day, which was continued for 2 months. Figure 3Open in figure viewerPowerPoint Clearing of the PL after specific anti-Toxoplasma therapy Reactive serology persisted for both IgG and IgM for 8 months, but no new lesions developed." @default.
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- W1998605110 date "1999-05-01" @default.
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- W1998605110 title "Pityriasis lichenoides and acquired toxoplasmosis" @default.
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- W1998605110 doi "https://doi.org/10.1046/j.1365-4362.1999.00670.x" @default.
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