The condition dwarfism or restricted growth is typically characterized by short stature, with an adult height of less than 4 feet 10 inches (147 cm). Over 200 different disorders exist that can cause restricted growth and aside form short stature, symptoms vary considerably depending on the cause of the condition. Generally these disorders can be divided into those that cause either disproportionate short stature or proportionate short stature.
In this form of dwarfism, one or more body parts are larger than the other and in most cases the trunk is larger than the limbs. The head is usually disproportionately large compared with the rest of the body. The majority of dwarfism cases are of the DSS form and the most common cause of DSS is achondroplasia. Typical features of this condition include:
Here, all parts of the body are small but they are in proportion to each other. Disorders that cause PSS affect overall growth and several bodily symptoms are often poorly developed. Usually, PSS is simply caused by having small parents. Another cause of PSS is growth hormone deficiency, caused by the pituitary gland failing to produce sufficient levels of growth hormone. Signs of this condition include: