It could be lichen nitidus, phrynoderma , lichen spinulosus, keratosis pilaris, keratosis circumscripta or a manifestation of darier disease. Without proper examination and assessment of the skin condition it is not possible to comment on the exact cause. Please get the condition properly assessed by a qualified certified dermatologist. Hope this is helpful.
Answered2018-01-30 03:40:39
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