Two-headedness

Two-headedness, or dicephalia, is a rare condition where a person is born with two fully formed heads sharing one body. This occurs when a developing embryo doesn't fully separate during early development, leading to a single body with two heads. Each head may have its own brain and sensory organs but shares vital organs and limbs. The condition varies in severity; in some cases, the heads may be independent in movement and decision-making, while in others, coordination can be limited. Two-headedness is an extremely rare congenital anomaly, often requiring specialized medical care.