Cat called syndrome is a very rare disease, mainly caused by chromosome deficiencies. Because of the absence of chromosome chromosomal chromosomal nuclei no. 5, another 5p-commitment, which is the most common missing syndrome, is known for the crying of the cat when the baby is born, due to the development of the child's larynx or the lack of differentiation, with a prevalence rate of approximately 1/50000, with more women than men. Although the proportion is rather low, it not only causes great suffering to the child, but also to the family as a whole, because it cannot be expressed in language, and all aspects of intellectual development are severely hampered, but it is also slightly offensive。
What causes this disease? The main causes are four。
1. Physical factors
X-rays and ionizing radiation may lead to chromosomal deficiencies, mainly due to intense radiation during pregnancy。
Chemical factors
This is a broader range of chemicals, such as metabolism, epilepsy, pesticides, poisons such as benzene, benzene, arsenic, etc., which can be responsible for the disease, and pollution of the environment, food, etc., can be the cause of the disease。
3. Biological factors
Infecting micro-organisms such as bowworms, rubella virus, megacell virus, measles virus, mumps virus, etc. During pregnancy may also cause a risk of the disease。
4. Older pregnant women。
It has been clinically believed that the risk of older mothers is increasing in many ways, and that for this rare disease, the proportion of children born to older mothers is higher than for those of normal age。
The most recent case of such a child in shanghai is that of an 11-year-old boy who is suffering from the disease, who can only say about 10 words and who is difficult to settle down. This visit to the hospital is due to a serious sleep problem, but even when he is in the hospital, he has no moment to be quiet, and he is hard to complete for something that can easily be done by taking a piss。
When he was examined 42 days after his birth, he was found to have facial abnormalities and difficulties in feeding, accompanied by fear of sound, light and strangers. At the age of 3, chromosome examination revealed the absence of chromosome no. 5 and was diagnosed as “cat called syndrome”. Over the years, much pain and suffering have been inflicted on the entire family. His parents, who had been examined for chromosomes, were perfectly normal, clearly not genetic, and what caused the disease to the child, for which very clear reasons could not be found。
Now that he is 11 years old, the future will leave him and his parents with endless pain and anguish, because the mortality rate for this disease is still very low, which means that he can still live for many years, except that his height and intelligence are clearly worse than usual, but that his parents can only look at his life in such pain because of the lack of chromosomes, so there is absolutely no possibility of reversing the disease。
