For as long as I can remember, I've had a weird blue mole on my right hand. And for almost as long, I've been anxious that it's not just a blue mole, but maybe, idk, cancer? But, thankfully no.

A patient recently came in to ask about a dark spot on her leg that was different from the rest of her moles. The doo-dad in question was a blue-black, very symmetric slight bump on her leg, which had ...

Melanocytic nevi are a category of benign melanocytic proliferations with a number of subtypes. These include congenital melanocytic nevi, blue nevi, acquired melanocytic nevi, and Spitz nevi. Many of ...

Blue nevi are a category of melanocytic tumors, which arise from the proliferation of dermal dendritic melanocytes to form an acquired pigmented mole. They are also called pigmented nevi, ...

Blue Rubber Bleb Nevus Syndrome (BRBNS) is a rare vascular disorder characterised by multifocal venous malformations that most notably affect the skin and gastrointestinal tract. These lesions, often ...

The man’s nasal lesion was in all likelihood a blue nevus. Blue nevi are visible manifestations of dermal melanocytosis that occur in solitary blue or gray-blue papules. The most common sites of ...

Although a diagnosis can usually be made without further investigation, other congenital melanocytic nevi can present in similar locations. A café-au-lait patch can present on the face, but its ...

Nevus of Ota is a condition where hyperpigmentation occurs around the eye and sometimes in the eye itself. Hyperpigmentation is when some patches of skin are darker than the surrounding skin. Nevus of ...