Triple X syndrome - Symptoms & causes - Mayo Clinic
2022年2月2日 · In triple X syndrome, a female has three X chromosomes. Many girls and women with triple X syndrome don't experience symptoms or have only mild symptoms. In others, symptoms may be more apparent — possibly including developmental delays …
Triple X syndrome - Diagnosis & treatment - Mayo Clinic
2022年2月2日 · If triple X syndrome is suspected after birth based on signs and symptoms, it can be confirmed by genetic testing. In addition to genetic testing, genetic counseling can help you gain comprehensive information about triple X syndrome.
Down syndrome - Symptoms and causes - Mayo Clinic
2024年11月12日 · Trisomy 21. About 95% of the time, Down syndrome is caused by trisomy 21. This means the person has three copies of chromosome 21, instead of the usual two copies.
Not the end of the road: Delivering the diagnosis of sex …
2019年3月19日 · Females with trisomy X tend to be tall but often have no physically distinguishable characteristics. Symptoms may be mild, usually involving minor motor development and language delays. Sex development and fertility are frequently normal.
Turner syndrome - Symptoms & causes - Mayo Clinic
2022年2月11日 · Turner syndrome, a condition that affects only females, results when one of the X chromosomes (sex chromosomes) is missing or partially missing. Turner syndrome can cause a variety of medical and developmental problems, including short height, failure of the ovaries to develop and heart defects.
Triple X syndrome - Doctors and departments - Mayo Clinic
2022年2月2日 · Females with this genetic disorder have three X chromosomes instead of two. Symptoms can be mild or include developmental delays and learning disabilities.
Klinefelter syndrome - Symptoms and causes - Mayo Clinic
2024年10月29日 · Klinefelter syndrome is a common condition that results when a person assigned male at birth has an extra copy of the X sex chromosome instead of the typical XY. Klinefelter syndrome is a genetic condition that occurs …
三 X 染色体综合征 - 症状与病因 - 妙佑医疗国际
2022年8月29日 · 三 x 染色体综合征也称 x 三体综合征或 47, xxx 综合征，它是一种影响女性的遗传障碍，发病率约为千分之一。 正常女性的所有细胞均含有两条 X 染色体，即从父母双方各获得一条 X 染色体。
Angelman syndrome - Symptoms and causes - Mayo Clinic
2024年3月8日 · Symptoms. Angelman syndrome symptoms include: Developmental delays, including no crawling or babbling at 6 to 12 months. Mental disability, also called intellectual disability. No speech or little speech. Trouble walking, moving or balancing. Smiling and laughing often and seeming happy. Being easy to excite. Trouble sucking or feeding.
Rett syndrome - Symptoms and causes - Mayo Clinic
2022年5月3日 · Symptoms of Rett syndrome occur, such as slowed head growth, abnormal hand movements, hyperventilating, screaming or crying for no apparent reason, problems with movement and coordination, and a loss of social interaction and communication.