What are the types of dwarves?
There are more than 200 different conditions that cause a dwarf that can be divided into two wide categories called adequate dwarf and disproportionate dwarf. The person with a reasonable dwarf, who is most often caused by hormone disorders, is less than the diameter, but has the same relative physical dimensions as someone without dwarfs. In a disproportionate dwarf, which is usually caused by disorders affecting the development of bones or cartilage, the relative sizes of different parts of the body differ from the size of nondware. For example, a person with a disproportionate dwarf can be of normal size but unusually short limbs. Significant types of dwarfs include hypochondroplasia, diastrophic dysplasia and lack of growth hormone. Most dwarfs are genetic, either inherited from the parent or as a result of a new genetic mutation. Dwarfism can also be the result of other health problems in childhood, including congenital hypothyroidism, lack of growth hormone or stress causedon a serious ongoing psychological trauma. A short figure may also be the result of normal inheritance in short parents, not any disorder or health problem, but this is usually not classified as a dwarf.
Achondroplasia, which is by far the most common form of a dwarf and represents 70 percent of cases, is a genetic disorder that causes an overproduction of a protein involved in bone growth called fibroblastic growth factor receptor three. The surplus disrupts the development of bones, resulting in excessively short arms and legs, an average height of adults of 4 feet 3.5 inches (about 1.3 m) in men and 4 feet of 0.5 inches (about 1.2 m) in women and characteristic skeletal elements including shortened fingers and unusually prominent forehead. Small children with achondroplasia have an increased risk of death on central or obstructive apnea and often suffer from hypotonia and delayed development of motor skills, but people with achondroplasia have normal intelligence and can live the same life as people without a state.
Another form of a dwarf caused by mutation in a fibroblast growth receptor Three gene is hypochondroplasia, also called atypical achondroplasia. Hypochondroplasia produces skeletal abnormalities similar to those caused by achondroplasia, but are usually less pronounced. Children with hypochondroplasia are less likely that children with achondroplasia suffer from delayed engine development and respiratory problems. Hypochondroplasia can cause an increased risk of mild mental retardation, although it is still controversial among the researchers and most people with hypochondroplasia have undisturbed intelligence.
Dysplasia is another type of disproportionate dwarf caused by problems with the development of bones and cartilage. Diastrophic dysplasia results in significantly shortened arms and legs, spine deformities such as scoliosis and joint mobility problems. About half of the children with the diasterOut of dysplasia is born with a cleft floor and the ears are common. Intelligence is not affected, but people with dysplasia often have problems with engine mobility and control. Diastrophic dysplasia is similar to a state called atelosteogenesis, type two, but it is much more serious and causes childhood or death in childhood.
Lack of growth hormone is a common cause of a reasonable dwarf. If the body of the child does not create enough proteins necessary for growth, growth slows and developmental milestones in engine management can be delayed. The growth of HANDEDATEK RMONE can lead to an adult height of up to 4 feet (1.2 m). Unlike the types of dwarves caused by skeleton problems, in childhood, lack of growth hormone by injection of other human growth hormones to compensate for low body production.
insufficient thyroid levels in infant age, called congenital hypothyroidism, can cause a dwarf if it is not treated. The height of adults in people with untreated congenitalM hypothyroidism can be up to 3 feet of 4 inches (about 1 m). They may also suffer from mental retardation, infertility and reduced muscle tone and engine control. The thyroid deficiency can be caused by a genetic defect or a lack of diet such as iodine deficiency.
Most people with a dwarf have normal intelligence, but some of the conditions that cause a dwarf also cause mental retardation. In addition to congenital hypothyroidism, these types of dwarfs include Turner syndrome and some cases of Noonan syndrome. Some types of dwarfs may result in a significantly shortened life due to symptoms such as heart defects, seizures and respiratory problems. For example, Ellis - Van Creveld syndrome causes congenital heart defects and respiratory problems that cause about half of the suffering dies in childhood, although those who live into adulthood can live a normal life. The primordial dwarf, a term referring to several forms of a reasonable dwarf that starts in the womb is during the first threeThe decade of life almost always fatal.