X-linked mental retardation is a genetic condition that described by mild to moderate mental incapacity that affects only males. Affected males frequently have delayed development of motor skills like walking, and their speech development may be also be delayed.
People with X-linked mental retardation may likewise have an opening or cleft in the lip, with an opening in the top of the mouth. A cleft may occur on one or the two sides of the upper lip.
Some males with this condition have unique facial features, including a long face, a sloped forehead, a broad nose, a noticeable bone ridge in the lower brow, and slanting outside corners of the eyes that point upward. They may also have low-set ears and large hands.