Article presents a type of melanocytic naevus called naevus hypermelanoticus. It is a common naevus usually manifesting like a dark dot of 2-18 mm in diameter. Histological examination shows a great amount of melanin in the horný layer and other parts of epidermis, and melanophages in the upper dermis. Differentiation between naevus hypermelanoticus and evolving melanoma is important.

        Key words: hypermelanotic naevus - melanocytic naevus - melanin - pigmented parakeratosis