Exploring The 3 Types Of Down Syndrome: What You Need To Know

Down syndrome is a genetic condition marked by an extra chromosome, leading to a chromosome count of 47 instead of 46. This extra chromosome affects physical and mental development, and it is also known as Down syndrome.

What you need to know:

What is Down syndrome?

It is a genetic condition caused when abnormal cell division results in extra genetic material from chromosome 21. It can vary from one person to another and can cause long-term intellectual and learning disabilities. It is one of the most common causes of learning disability and other chromosomal disorders in children. It can also adversely affect their heart health and gastrointestinal disorders.

Who does Down syndrome affect?

Down syndrome is a condition that can affect anyone, irrespective of the measures taken by parents. Down syndrome often occurs randomly and is not usually passed down genetically. The disorder generally develops at the moment of conception, when the egg and sperm unite.

Down syndrome symptoms

Here are some common physical symptoms of Down syndrome that you can experience:

Smaller head size
Shorter neck
Protruding tongue
Learning and cognitive development
Bad muscle tone
Unusually shaped ears
Short fingers, hands and feet
Heart diseases
White spots on the iris

If you have Down syndrome, you can experience delays in mastering specific skills, such as:

Fine motor skills for movement
Language developmental skills for talking in everyday situations
Cognitive skills for learning
Emotional skills for social activities

You can also experience behavioral Down syndrome, which includes

Stubbornness and excessive tantrums
Inability to focus and concentrate
Obsessive-compulsive behaviors

Down syndrome causes

Down syndrome occurs because of abnormal cell division involving chromosome 21. Three genetic forms of Down syndrome are:

Trisomy 21: It is the most common type, seen in 95% of Down syndrome cases. Trisomy 21 will have three chromosomes in all cells instead of two. This occurs due to irregular cell division during the formation of sperm or egg cells.
Mosaic Down syndrome: A rare form of Down syndrome in which only some of the person’s cells contain an extra chromosome 21. This mixture of cells with and without an extra chromosome results from an abnormal cell division after egg fertilization.
Translocation Down syndrome: In this type of Down syndrome, part of chromosome 21 attaches to another chromosome before or during conception. It occurs when one chromosome breaks off and gets attached to another chromosome, resulting in the translocation of Down syndrome.

How is Down syndrome treated?

While Down syndrome cannot be cured, it can managed by several therapeutic programs, including:

Occupational therapy
Speech therapy
Participating in special education programs in school
Glasses for vision problems
Assisted hearing devices for hearing loss

Prevention

Down syndrome cannot be prevented since it is a genetic condition. However, if you want to learn more about genetic conditions, visit a medical expert and discuss your options for genetic testing.

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