Clinical Features: Presents around adolescence More common in blacks, with a female predominance Presents with small papules on the chest, back and upper arms The papules
[dermpedia.org]
These papules increase in size and develop a papillomatosis appearance. Papules coalesce most prominently on the central and upper back, axillae, neck, and breast.
[healio.com]
On physical examination, the patient had brownish-tan sessile, velvety, hyperkeratotic, coalescing papules on the chest, back, nape of neck, and extensor surfaces of upper
[ncbi.nlm.nih.gov]