Growth disorders Growth disorders Achondroplasia is a type of genetic disorder that is a common cause of dwarfism. People with this condition have short stature, usually reaching a full adult height of around 4'0" (1.22 metres). ...more on Wikipedia about "Achondroplasia"
Acromegaly (from Greek akros "high" and megalos "large" - extremities enlargement) is a hormonal disorder that results when the pituitary gland produces excess growth hormone (hGH). Most commonly it is a benign hGH producing tumor derived from a distinct type of cells (somatotrophs) and called pituitary adenoma. ...more on Wikipedia about "Acromegaly"
Dwarfism is a condition in which a person, animal or plant is much below the ordinary size of the species. When applied to people, it implies not just extreme shortness, but a degree of disproportion. Dwarfism is now rarely used as a medical term and is sometimes (but not always) considered impolite or pejorative. Today, the term little person tends to be preferred. According to the Little People of America the human definition of this term is stated as such "a medical or genetic condition that usually results in an adult height of 4'10" (147 cm) or shorter, among both men and women, although in some cases a person with a dwarfing condition may be slightly taller than that." ...more on Wikipedia about "Dwarfism"
Gigantism or giantism, (from Greek gigas, gigantos " giant") is a condition characterized by excessive height growth. As a medical term, gigantism is rarely used except to refer to the rare condition of pituitary gigantism due to prepubertal growth hormone excess. There is no precise definition of the degree of tallness that qualifies a person to be termed a "giant." The term has been typically applied to those whose height is not just in the upper 1% of the population but several standard deviations above mean for persons of the same sex, age, and ethnic ancestry. Typical adult heights of Americans and Europeans to whom the term might be applied are 210 - 240 cm (7 - 8 feet) though it may be possible for a person to grow up to 270 cm (9 feet) or taller. The term is rarely applied to basketball players and those whose heights appear to be the healthy result of normal genetics and nutrition. ...more on Wikipedia about "Gigantism"
Hypochondroplasia is a developmental disorder caused by an autosomal dominant genetic defect in the fibroblast growth factor receptor 3 gene (FGFR3) that results in a disproportionately short stature, micromelia, and a head that appears large when compared with the underdeveloped portions of the body. It is also known as "achondroplasia tarda" and "atypical achondroplasia." ...more on Wikipedia about "Hypochondroplasia"
In the 19th century, midget was a medical term referring to an extremely short but normally-proportioned person (e.g., with growth hormone deficiency), and was used in contrast to dwarf, which denoted disproportionate shortness. Like many other older medical terms, as it became part of popular language, it was usually used in a pejorative sense. When applied to a person who is extremely short, midget is now considered derogatory. The word dwarf has generally replaced midget even for proportionally short people, and the term little person is also sometimes used. According to the Little People of America, the human definition of this term is stated as such "a medical or genetic condition that usually results in an adult height of 4'10" (147 cm) or shorter, among both men and women, although in some cases a person with a dwarfing condition may be slightly taller than that." See also Lilliput. ...more on Wikipedia about "Midget"
Psychogenic dwarfism, Psychosocial dwarfism or Stress dwarfism is a growth disorder that is observed between the ages of 2 and 15, caused by extreme emotional deprivation or stress. The symptoms include decreased growth hormone (GH) secretion, very short stature, weight that is inappropriate for the height, and immature skeletal age. This disease is a progressive one, and as long as the child is left in the stressing environment, his or her cognitive and linear abilities continue to degenerate. It is often seen in feral children and in children kept in abusive, confined conditions for extended lengths of time. It can cause the body to completely stop growing but is generally considered to be temporary; regular growth will resume when the source of stress is removed. ...more on Wikipedia about "Psychogenic dwarfism"
Silver-Russell dwarfism, also called Silver-Russell syndrome (SRS) or Russell-Silver syndrome (RSS) is a growth disorder occurring in approximately 1/75000 births. It is a genetic anomaly, and there are no tests to determine if this is what a child has. ...more on Wikipedia about "Silver-Russell dwarfism"
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