Does your child have these symptoms? Let's talk about Fragile X Syndrome (FXS)

You may have noticed that your little one is experiencing developmental delays or some of their behavior patterns are a bit strange. Maybe they are late in speaking, or they don't want to socialize with other children. Sometimes, behind these things, there may be a condition called Fragile X Syndrome (FXS). Don't be scared when you hear this name. Let's talk about it in a little more detail today, in a very simple way, okay?

What is Fragile X Syndrome?

Simply put, Fragile X Syndrome is a genetic condition that is passed down from generation to generation . It can cause a child to have certain physical changes, behavioral problems, and various other health problems. For example:

• Developmental delays in the child.
• Intellectual disabilities.
• Learning disabilities.
• Frequent anxiety.
• Difficulty paying attention and hyperactivity, a condition known as Attention-deficit/hyperactivity disorder (ADHD).
• It may even show signs of autism spectrum disorder.

It is called "Fragile X" because when the X chromosome is viewed under a microscope, one part of it appears "broken" or "fragile." Another name for it is Martin-Bell syndrome. This is one of the most common inherited intellectual and developmental disorders (IDDs).

How common is this condition?

Researchers are unsure exactly how many people in the world have Fragile X Syndrome, but they estimate that about one in 11,000 girls and one in 7,000 boys may have the condition.

What are the symptoms of Fragile X Syndrome?

Fragile X Syndrome can affect your child's intelligence, mental health, physical appearance, and behavior. Let's take a look at what are the common symptoms in each area.

Intelligence-related problems

• Learning disabilities: It can be difficult to learn and remember new things.
• Decreased IQ: As people get older, their IQ scores may decrease slightly.
• Delayed developmental milestones in childhood: For example, they may be later than other children in starting to walk, talk, and eat independently.
• Nonverbal communication impairments: This means that it may be difficult to express ideas using gestures, facial expressions, and other nonverbal cues.
• Problems understanding language and speaking: Around the age of two, you may notice that your child is having some trouble speaking and understanding words.
• Difficulty solving math problems.

Be sure to check your child's development for any of these delays. It's important to talk to your doctor about what developmental milestones are appropriate for each age and how to assess them properly.

Mental health problems

• Frequent anxiety .
• Conditions like depression .
• A strong need to repeat or think about certain things (Obsessive-compulsive behaviors).

Physical characteristics

These symptoms do not occur in everyone, but some of the most common symptoms are:

• An elongated, narrow face.
• A big forehead.
• A big deal.
• Big ears.
• Crossed eyes (strabismus).
• Fingers being excessively flexible, or "double-jointed".
• Flat feet.
• The testicles of boys enlarge after puberty.
• High-arched palate.
• Lack of muscle strength (hypotonia), which means the body may feel a bit limp.

What are the behavioral problems?

Fragile X Syndrome can cause a variety of behavioral problems in a child. For example:

• Difficulty paying attention and hyperactivity (ADHD).
• Social anxiety and shyness. Imagine, when you go to a party at a relative's house, you stay away from other people and look down when someone speaks.
• Repetitive behaviors such as hand clapping or hand biting.
• Reluctance to make eye contact.
• Sensory disorders - This means that you may be hypersensitive to things like crowded places, someone touching your body, noise, certain foods, and fabrics. Sometimes you may get startled by even the slightest sound, or you may say you can't eat certain foods.
• Difficulty understanding other people's emotions and social cues.

What causes Fragile X Syndrome?

This is due to a genetic mutation in the gene `FMR1` located on our X chromosome. This `FMR1` gene instructs our body to make a protein called `FMRP`. This `FMRP` protein is very important for the development of connections `(synapses)` between nerve cells. It is through these `synapses` that nerve impulses `(nerve impulses)` travel.

Due to a mutation in the FMR1 gene, a section of DNA called the CGG triplet repeat becomes much longer than normal. Normally, this section repeats itself about 5 to 40 times, but in people with Fragile X Syndrome, it repeats itself more than 200 times . This causes the FMR1 gene to be "silenced," meaning it cannot properly make the FMRP protein. This affects the child's nervous system and causes the symptoms of Fragile X Syndrome.

How is this passed from generation to generation? (Inheritance Pattern)

Fragile X Syndrome is inherited in an X-linked dominant pattern. This means that the mutated gene that causes it is located on the X chromosome. It is "dominant" because even having one copy of the mutated gene is enough to cause the disease.

Fragile X Syndrome is more common in boys and has more severe symptoms because they only have one X chromosome. Girls have two X chromosomes. Therefore, even if one X chromosome has a mutation, the other healthy X chromosome may not show symptoms and may only be a carrier. However, boys with Fragile X always develop symptoms.

Are there other health risks for Fragile X carriers?

Yes, it's very important. If your child has Fragile X Syndrome, you should tell your doctor about it. Because you may be a carrier, you may have increased health risks, such as:

• Menopause occurs before the age of 40.
• Memory-related diseases such as dementia.
• High blood pressure.
• Depression.
• Anxiety.
• Migraines.
• Decreased function of the thyroid gland (Hypothyroidism).
• Chronic pain.
• Sleep apnea.

What are the possible complications of Fragile X Syndrome?

Sometimes people with Fragile X Syndrome can develop other health conditions. In one study, parents reported that their children also had:

• Seizures.
• Sleep problems. Another study found that 4 out of 10 children with both Fragile X and autism spectrum disorder had sleep problems, compared to 3 out of 10 children with Fragile X alone.
• Aggression or irritability. Children with Fragile X, especially those with autism spectrum disorder, are more likely to be aggressive.
• Self-injury behaviors.
• Obesity.

How is Fragile X Syndrome diagnosed?

To diagnose Fragile X Syndrome, a DNA sample from your child's blood or other tissue is taken and tested. The doctor will send the sample to a lab. There, they will check to see if the child has the mutation in the FMR1 gene mentioned earlier.

If you are pregnant and suspect that your child may have Fragile X Syndrome, you can meet with a genetic counselor and have prenatal tests such as:

• Amniocentesis: This involves taking a sample of the amniotic fluid in the uterus and testing it.
• Chorionic villus sampling: This involves taking a sample of cells from the placenta and testing them.

At what age is this disease usually diagnosed?

Most boys are diagnosed around 35-37 months of age . Girls may be diagnosed a little later, around 42 months of age . However, you may notice some symptoms as early as 12 months.

What questions can the doctor ask to help diagnose the disease?

Before your child's doctor or genetic counselor orders a Fragile X Syndrome test, they may ask you questions like these:

• What symptoms have you noticed in your child?
• How does your child learn new things?
• Is your child shy?
• Does your child have sleep problems?
• Is your child always anxious?
• Does your child avoid making eye contact?
• Does your child have any unusual-looking features on their body?
• How is your child's speaking ability?

Can Fragile X Syndrome be diagnosed in adulthood?

Although Fragile X Syndrome is usually diagnosed in childhood, there are two other syndromes in the Fragile X family that affect adults. They are:

• Fragile X-associated tremor/ataxia syndrome (FXTAS): Symptoms include balance problems, shaking hands, mood instability, memory loss, thinking problems, and numbness in the limbs.
• Fragile X-associated primary ovarian insufficiency (FXPOI): Symptoms include decreased fertility, difficulty conceiving, irregular or absent menstrual periods, and premature menopause.

If you have symptoms like these, it's best to talk to a doctor.

How is Fragile X Syndrome treated?

There is no specific cure for Fragile X Syndrome. However, the symptoms of the condition can be treated. Your child's doctor may prescribe various medications. Here are some examples, categorized by symptoms:

• Epilepsy or mood instability:
• Lithium carbonate
• Gabapentin (Neurontin®)
• For ADHD:
• Methylphenidate (Ritalin®, Concerta®) and dextroamphetamine (Adderall®, Dexedrine®)
• Venlafaxine (Effexor®) and nefazodone (Serzone®)
• For obsessive-compulsive disorder (OCD):
• Fluoxetine (Prozac®)
• Sertraline (Zoloft®) and citalopram (Celexa®)
• For sleep problems:
• Trazodone (Desyrel®)
• Melatonin

This is just a small list of medications your doctor may prescribe. Be sure to discuss the possible side effects and complications of each medication with your doctor.

In addition to medication, the doctor often recommends psychotherapy , which is a form of therapy that helps the child live with the condition and control their behavior.

What is the future for people with Fragile X Syndrome?

Some people with Fragile X Syndrome can live independently. Studies show that about 4 in 10 girls and 1 in 10 boys with Fragile X grow up to be highly independent. Girls are more likely than boys to:

• Reading books with new ideas and new words.
• Speaking complex sentences.
• Speaking at a normal pace.

Fragile X syndrome is usually more severe in boys. About 8 in 20 girls with Fragile X do not need help with daily tasks. But only 1 in 20 boys do. While many girls graduate from high school, the majority of boys do not. About half of women with Fragile X work full-time, but only 2 in 10 boys do.

Can my child go to daycare/school?

Yes, but your child may need special accommodations at daycare or school. Some parts of the school day and the classroom may need to be adjusted to suit their needs. Your child's teacher may be able to make some adjustments to the environment and curriculum.

Changes related to the environment:

• Keeping noise pollution at a low level.
• Keeping natural light available.
• Avoiding crowded places.

Changes related to the syllabus:

• Using visual aids such as diagrams, coloring pages, and pictures.
• Helping children learn by using materials they find very interesting .
• Directing the child to work in small groups .

Be sure to let the school know that your child has Fragile X Syndrome. Talk to the teacher about their special needs. You may also want to see a school psychologist and/or counselor. They work with children over the age of 3. Other specialists you may want to contact include:

• Occupational therapists
• Behavior therapists
• Speech-language pathologists
• Social workers

Ask your local school and health care providers for more information about this.

How long does Fragile X Syndrome last? What is the life expectancy?

Fragile X Syndrome is a lifelong condition. There is no specific cure for it.

However, none of the symptoms of Fragile X Syndrome are life-threatening. Therefore, the life expectancy of these people is similar to that of a normal person.

Can Fragile X Syndrome be prevented?

No, Fragile X Syndrome is a genetic condition and cannot be prevented. If you are planning to become pregnant, or are already pregnant, it is worth talking to a genetic counselor about the risk of your child inheriting this condition.

What is life like with Fragile X Syndrome?

Fragile X Syndrome does not affect every child in the same way. Your child's medical team can give you a better idea of ​​how it will affect your child and family. While some aspects of the condition can be challenging, there are also many positive features. For example, researchers have seen people with Fragile X:

• It's helpful.
• Kind.
• Thinking about others.
• Friendly.
• Can be imitated well.
• Visual memory and long-term memory are good.
• I like jokes and I find them funny.

How can I help a friend/family member with Fragile X Syndrome?

Be as informed as possible. Look for support groups and community resources that can help you and them. Life skills programs may be appropriate. Some provide guidance on things like:

• Social activities.
• Sex.
• Hobbies.
• Education.
• Jobs.

It is very important that you advocate for your child to ensure that they receive the care they need and have the best possible quality of life.

When should I take my child to a doctor?

Take your child to a pediatrician as soon as you notice symptoms of Fragile X Syndrome. Don't delay, because early intervention is very important.

What questions should I ask the doctor?

Here are some questions you can ask your doctor when discussing your diagnosis:

• Should my child see a specialist?
• What kind of therapists should my child see?
• How serious is Fragile X Syndrome?
• What medicine is suitable for my child?
• How can I help my child?
• What are my early intervention options?
• How can we as a family help my child?

A diagnosis of Fragile X Syndrome can be difficult for you and your child. It's the beginning of many changes and adjustments. Things like therapy, medication, and school accommodations are now part of your child's life. While you're helping your child, don't forget your own needs. Remember, having your child with Fragile X Syndrome means you're also at higher risk for a number of other health conditions, such as depression and migraines.

Finally, things to remember

So, we've talked a lot about Fragile X Syndrome today. Here are some key things to remember:

• This is a genetic condition , meaning it is inherited.
• This is lifelong , but symptoms can be managed.
• Early diagnosis, early treatment, and initiation of necessary therapeutic services are very important for the child's development.
• Just like the child, you need support. It's hard to face these things alone.
• Although there are challenges with this situation, these children also have many positive things and abilities.

I hope this information is helpful to you. If you have any further questions, please feel free to talk to your doctor.

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