The clinical and histologic spectrum of melanotic macule of the nail unit is examined and the differences in the clinical appearance of longitudinal melanonychia caused by melanotic macule and by other kinds of prolif...
Oral hyperpigmentation is a common event in older individuals, however, is exceptional in neonates (congenital melanotic macules). Conversely, 70- 80% of people have sebaceous glands in the oral mucosa, with the tongu...