Dwarfism is short stature that results from a genetic or medical condition. Dwarfism is generally defined as an adult height of 4 feet 10 inches (147 centimeters) or less. The average adult height among people with dwarfism is 4 feet (122 cm).
Many different medical conditions cause dwarfism. In general, the disorders are divided into two broad categories:
- Disproportionate dwarfism. If body size is disproportionate, some parts of the body are small, and others are of average size or above-average size. Disorders causing disproportionate dwarfism inhibit the development of bones.
- Proportionate dwarfism. A body is proportionately small if all parts of the body are small to the same degree and appear to be proportioned like a body of average stature. Medical conditions present at birth or appearing in early childhood limit overall growth and development.
Some people prefer the term "short stature" rather than "dwarf" or "dwarfism." So it's important to be sensitive to the preference of someone who has this disorder. Short stature disorders do not include familial short stature — short height that's considered a normal variation with normal bone development.
April 03, 2016
- Bang GM, et al. "Ocular moyamoya" syndrome in a patient with features of microcephalic osteodysplastic primordial dwarfism type II. Journal of American Association for Pediatric Ophthalmology and Strabismus. 2013;17:100.
- Frequently asked questions. Little People of America. http://www.lpaonline.org/faq-. Accessed Aug. 3, 2014.
- Achondroplasia. Genetics Home Reference. http://ghr.nlm.nih.gov/condition/achondroplasia. Accessed Aug. 5, 2014.
- Spondyloepiphyseal dysplasia congenita. Genetics Home Reference. http://ghr.nlm.nih.gov/condition/spondyloepiphyseal-dysplasia-congenita. Accessed Aug. 5, 2014.
- Rogol AD. Causes of short stature. http://www.uptodate.com/home. Accessed Aug. 5, 2014.
- Isolated growth hormone deficiency. Genetics Home Reference. http://ghr.nlm.nih.gov/condition/isolated-growth-hormone-deficiency. Accessed Aug. 5, 2014.
- Turner syndrome. Genetics Home Reference. http://ghr.nlm.nih.gov/condition/turner-syndrome. Accessed Aug. 5, 2014.
- Learning about Turner syndrome. National Human Genome Research Institute. http://www.genome.gov/19519119. Accessed Aug. 5, 2014.
- Pauli RM. Achondroplasia. GeneReviews. http://www.ncbi.nlm.nih.gov/books/NBK1152/. Accessed Aug. 5, 2014.
- Wright MJ, et al. Clinical management of achondroplasia. Archives of Diseases in Childhood. 2012;97:129.
- Ireland PJ, et al. Optimal management of complications associated with achondroplasia. The Application of Clinical Genetics. 2014;7:117.
- Hypopituitarism in children resulting in short stature. The Merck Manual for Health Care Professionals. http://www.merckmanuals.com/professional/endocrine_and_metabolic_disorders/pituitary_disorders/hypopituitarism_in_children_resulting_in_short_stature.html?qt=&sc=&alt=. Accessed Aug. 5, 2014.
- Deyle DR (expert opinion). Mayo Clinic, Rochester, Minn. Aug. 25, 2014.
- Bodensteiner JB (expert opinion). Mayo Clinic, Rochester, Minn. Aug. 29, 2014.