Tricephaly

Tricephaly is a rare congenital disorder, which means that a person has three heads: from two to five different torsos combined into one. It has a small chance of occurring in a child after several years of conception. Over the past two centuries, about a hundred cases have been recorded, but each of them represents an almost unique situation. Tricephaly has been equally studied or ignored, and most publications date back several years. In the 19th century, it was hypothesized that the skin was divided into two layers, the outer layer of skin (dermis) and the soft, unprotected inner layer (epidermis), as opposed to thick multilayers