Mandibuloacral dysplasia (MAD) is a rare genetic bone disorder characterized by growth delay, postnatal development of craniofacial anomalies including mandibular hypoplasia, progressive acral osteolysis, mottled or patchy pigmentation, skin atrophy, and partial or generalized lipodystrophy.

Height of the palate more than 2 SD above the mean (objective) or palatal height at the level of the first permanent molar more than twice the height of the teeth (subjective).