Primordial dwarfism is a form of dwarfism that results in a smaller body size in all stages of life beginning from before birth. More specifically, primordial dwarfism is a diagnostic category including specific types of profoundly proportionate dwarfism, in which individuals are extremely small for their age, even as a fetus. Most individuals with primordial dwarfism are not diagnosed until they are about 3 years of age. Medical professionals typically diagnose the fetus as being small for the gestational age, or as having intrauterine growth disability when an ultrasound is conducted...