So in the recessive case, passing on dwarfism to your child requires teamwork — both parents must give them a copy. To end up with recessive dwarfism, your child would have to get a dwarfism gene version from you and your partner. As I said earlier, the most common cause of dwarfism is one of these.
To end up with this type, you usually have to have a parent with dwarfism. A person with achondroplasia and with two average-size parents received one mutated copy of the gene associated with the disorder and one normal copy of the gene. It occurs when the pituitary gland fails to produce an adequate supply of growth hormone, which is essential for normal childhood growth. This has a couple of important implications for you. More than well-described conditions are known to cause short stature in a child. Complications Complications of dwarfism-related disorders can vary greatly, but some complications are common to a number of conditions. Delays in motor skills development, such as sitting up, crawling and walking Frequent ear infections and risk of hearing loss Bowing of the legs Difficulty breathing during sleep sleep apnea Pressure on the spinal cord at the base of the skull Excess fluid around the brain hydrocephalus Crowded teeth Progressive severe hunching or swaying of the back with back pain or problems breathing Narrowing of the channel in the lower spine spinal stenosis , resulting in pressure on the spinal cord and subsequent pain or numbness in the legs Arthritis Weight gain that can further complicate problems with joints and the spine and place pressure on nerves Proportionate dwarfism With proportionate dwarfism, problems in growth and development often result in complications with poorly developed organs. You must have one gene copy leading to dwarfism and one gene copy leading to average height. Instead, treatments focus on managing the symptoms, including: Parents pass just one of their two copies to their child. Most occurrences of dwarfism result from a random genetic mutation in either the father's sperm or the mother's egg rather than from either parent's complete genetic makeup. He or she needs to get a version that leads to dwarfism from mom too. If she had one copy, she would also have dwarfism. Diastrophic dysplasia is a different form of short-limb dwarfism. But most people don't have any other serious problems and are able to live a relatively normal life, with a normal life expectancy. Sometimes the cause is unknown. After that, each of the many conditions that cause dwarfism has its own set of characteristics and possible complications. Finally, get involved with support associations like the Little People of America. Along with achondroplasia and diastrophic dysplasia, it is one of the more common types of dwarfism. Dwarfism has other causes, including metabolic or hormonal disorders in infancy or childhood. To make things easier to follow, I thought I would draw this out for you. Click here to learn how this happens. For example, a 2-year-old should not still be using a bottle, even if he or she is the size of a 1-year-old. Technically, that means an adult height of 4 feet 10 inches or under, according to the advocacy group Little People of America LPA. So that leaves the rarer, recessive types of dwarfism. Additional weight can increase their risk of heart problems.
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