Achondroplasia is that the most typical explanation for disproportionate short stature. Affected people have rhizomelic shortening of the limbs, megacephaly, and characteristic facial expression with frontal bossing and midface retrusion. In infancy, hypo tonicity is typical, and acquisition of biological process motor milestones is commonly each aberrant in pattern and delayed. Intelligence and life area unit sometimes close to traditional, though craniocervical junction compression will increase the danger of death in infancy. Extra complications embody preventative sleep disorder, tympanic cavity dysfunction, kyphosis, and spinal stricture. Achondroplasia is often diagnosed by characteristic clinical and photography findings in most affected people. In people in whom there's diagnostic uncertainty or atypical findings, identification of a heterozygous morbific variant in FGFR3 will establish the identification.