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Correspondence |

Generalized Lichen Spinulosus in a 4-Year-Old Boy Without Systemic Disease

Arjun Venkatesh; Elaine Dupuis, MBA, BSc; Vimal Prajapati, MD; Jaggi Rao, MD, FRCPC
Arch Dermatol. 2012;148(7):865-866. doi:10.1001/archdermatol.2012.188.
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Lichen spinulosus (LS) is a rare, benign disorder of unknown cause. Unlike keratosis pilaris (KP), LS is usually localized to sites of predilection such as acral areas.1 However, a more severe generalized variant also exists and has been associated with later onset and concomitant illness.24

Correspondence: Dr Rao, Division of Dermatology and Cutaneous Sciences, Department of Medicine, University of Alberta, 2-125 Clinical Sciences Bldg, Edmonton, Alberta, Canada, T6G 2G3 (jrao@ualberta.ca)

Financial Disclosure: None reported.

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Figure 1. Clinical findings. Well-circumscribed plaques composed of multiple, discrete, 1- to 2-mm rough, folliculocentric, skin-colored papules with central keratotic spines on the right lower abdomen and inguinal region. The forehead, neck, back, hips, and extensor extremities were also involved in a similar fashion.

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Figure 2. Histopathologic findings. Higher-power view highlighting keratotic plug in the follicular infundibulum, mild epidermal papillomatosis and focal parakeratosis, and a moderate perifollicular lymphocytic infiltrate and few slightly dilated blood vessels in the dermis (hematoxylin-eosin, original magnification ×20).

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