Hummmmm..... It doesn’t happen very often, but people do grow horns. They’re called cutaneous horns and they are the result of a wide range of epidermal lesions. According to the World Journal of Surgical Oncology, cutaneous horns appear in men over 55 and women over 65. Rare as these cases may be, cutaneous horns have been around for quite some time, with the first documented case appearing in the 1500s.