Down syndrome is a common genetic abnormality in the population. There are some characteristics of Down syndrome. Oftenly, the characteristics are easy to be observed via physical outlook of the patient. Yet, sometimes we cannot noticed the symptoms until the child grow up.

As we all know, the most usual symptom of Down syndrome patients is mental retardation. However, the level of severity of the mental retardation is different for every patient. Usually, the Down syndrome patients will have some malformations. Many studies show that there are more than 50 types of features related to this common birth defect. Although not all the patients will have the same symptoms, we can see some recurring symptoms too.

Most Common Down Syndrome Features

1. Flattened Face

2. Head size is small

3. Irregularly ear shape

4. Protruding tongue

5. Upwards slanting eyes

6. Length of fingers is short

7. Mental retardation

8. Development deficiency

9. Thyroid dysfunction

10. Hypogenitalism of hypergonadism

The characteristics that I have written above are the most common Down syndrome features that might be seen on the babies. However, we might see other features on the patients too. For example, most of the patients with this genetic disorder are unable to control their emotion. They can easily lose their temper. Most of these symptoms may not show during the baby time. It will start to become obvious when the baby grows.

Generally, the patient looks almost alike to each other. We can simply see the Down syndrome patient via their physical appearance. The confident clinical diagnosis is tough during the early time after birth. For the female patients, the menarche usually occurs at normal time. Most of the female patients are fertile. The pregnancy is possible. However, the male patients usually associated with hypogenitalism. Therefore, they are infertile generally.

Down syndrome is because of the abnormality of genetic information. They are born with an extra chromosome 21. Normally, we have only a pair of chromosome 21. The extra genetic information often results in those medical problems. The Trisomy 21 patient will easy to develop cancer cells than others. The abnormality is caused by the errors occurred during the cell division. The errors occur during the sperm or egg cell development. The errors occur are closely related to the age of the parents. Women who older than 35 years old will tend to produce the abnormal egg cells.

Summing up, the patients should get the suitable therapies to reduce the severity of these characteristics. It is recommended to seek for a doctor's advice to get the most suitable treatments to the patients.