Patient's question:
Your girlfriend's mother is intellectually disabled, with an IQ similar to that of a child. Your girlfriend is normal, and you are preparing to get married. You want to know if intellectual disability can be inherited across generations and if a DNA test can determine if it is not inherited across generations!Doctor's answer:
First, this situation depends on whether the mother has congenital or acquired intellectual disability due to postnatal diseases. If it is congenital, there is a certain degree of generational inheritance. If it is caused by postnatal diseases such as encephalitis, it is generally not inherited across generations. The child is threatened by intellectual disability, so parents must take the child to the hospital immediately for treatment to prevent blind medication that may alleviate symptoms. For parents, it is important to carefully observe changes in the child's symptoms and do their best to help the child receive timely treatment for the disease.