Your little one, especially a girl, may have noticed some developmental delays or difficulty doing things they used to do. Imagine, a child who was doing well for about six months suddenly stops learning new things and even forgets things they learned before. It is very normal for a mother or father to feel very scared and worried when they see something like this. Today we are going to talk about a very rare, but important to know, condition that mainly affects girls. This is what we call Rett Syndrome .
What is Rett Syndrome? Simply put...
Simply put, Rett Syndrome is a rare genetic and neurological condition. It mainly affects girls. It is caused by a genetic variant in a gene in our body, specifically a gene called `MECP2`. This `MECP2` gene plays a very important role in the development of our brain and the exchange of information between nerve cells, that is, the connection between nerve cells (synapse) . So, when there is a change in this gene, it affects the development of the child's brain.
In this condition, the first few months of a child's life, usually until about 6 months, develop just like other children. They do things that are appropriate for their age, such as crawling, smiling, and moving their limbs. However, after about 6 months, the child begins to lose the skills and abilities that they previously learned. For example, the ability to hold a toy with both hands, wave to their mother, and say words decreases. These symptoms appear at different stages as the child grows. However, one thing to remember is that although these symptoms stop getting worse (progressing) over time, they do not completely disappear. Therefore, these children need special care and support throughout their lives.
What are the symptoms of Rett Syndrome?
As mentioned earlier, a child can develop normally until about 6 months of age. The first signs of Rett Syndrome are developmental delays . This means that the child is late in doing things that are appropriate for their age, for example, not crawling when other children are crawling, waving their arms, or starting to talk.
As the child gets older, the signs of developmental regression, in which what has been learned is lost again, become clearly visible.
Symptoms that affect the child's muscles, movements, and behavior:
- Problems with balance and coordination while walking: Difficulty standing and walking. May fall frequently.
- Speech difficulties: Difficulty in saying words and expressing ideas. Some children may even lose the ability to speak completely.
- Difficulty swallowing or chewing food: This can lead to the child not getting the necessary nutrition, losing weight, and becoming malnourished .
- Muscle weakness or stiffness (spasticity): inability to control limbs properly.
- Difficulty performing familiar movements on command (apraxia): For example, being unable to do so when told to "wave your hand," but sometimes being able to wave your hand while standing still.
- Repetitive hand movements: Repeated hand movements such as squeezing, squeezing, and clapping are very characteristic of this disease.
Other symptoms:
- Sleep problems: Not sleeping well at night, waking up frequently.
- Digestive system problems: things like reflux and constipation .
- Intellectual disability: Learning abilities may be reduced.
- Frequent restlessness and irritability.
- Scoliosis: The spine curves to the side.
- Slow growth: Things like height and weight gain may be slower than other children.
Symptoms that can sometimes be life-threatening include:
- Breathing difficulties: Irregular breathing, breath holding, etc.
- Heartbeat irregularities.
- Seizures.
Do children with Rett Syndrome have special facial features?
Children with Rett Syndrome may have a small head compared to the rest of their body. This is called microcephaly . This can cause facial features to be slightly prominent. However, there are no specific facial features that are unique to this disorder, such as "this is what the face looks like."
Sometimes the symptoms of Rett Syndrome can be similar to those of another condition called Angelman Syndrome . Both conditions have things in common, such as speech and communication difficulties, developmental delays, seizures, and sleep problems. However, Angelman Syndrome has specific facial features, such as deep-set eyes, a wide mouth, and large gaps between the teeth. Rett Syndrome does not have these specific facial features.
Stages of Rett Syndrome
This condition goes through different stages as a child grows. At each stage, the child may show different symptoms. However, not all children go through all these stages in the same way. For example, some children with Rett Syndrome may never be able to walk.
Rett Syndrome Stages:
1. Stage I - Early onset stage: This begins between 6 and 18 months of age. The child's development slows down. For example, crawling is delayed, and the ability to look straight at the mother is reduced. The child's muscles become less firm ( low muscle tone ), and feeding difficulties may occur.
2. Stage II - Rapidly progressive stage: This usually occurs between the ages of 1 and 4 years. The child may lose the ability to speak and use their hands. They may clench their fists frequently. Some children may also exhibit behaviors similar to those of children with Autism Spectrum Disorder, such as a loss of interest in social interaction.
3. Stage III - Plateau or temporary stable stage: This usually occurs between the ages of 2 and 10 years. Some of the symptoms that were severe in the second stage, for example, communication skills and motor skills, may improve slightly. They may show interest in being social again. Seizures are common during this period.
4. Stage IV - Later motor decline: This can occur at any time after Stage III. The child may lose the ability to walk and muscle strength. However, the child's communication and thinking skills should continue to be present during this stage.
What are the causes of Rett Syndrome?
Rett Syndrome is often caused by a genetic variant in a gene called `MECP2`. As I mentioned earlier, this gene instructs the production of a protein called `MECP2`. This protein helps maintain the connections (synapses) between nerve cells and helps the child's brain function properly.
However, not all Rett Syndrome cases are linked to the MECP2 gene. Some genetic variants (for example, deletions) or variants in other genes, such as CDJK5 and FOXG1, can also cause atypical Rett Syndrome cases. Sometimes, these symptoms can be caused by genes that have not yet been identified.
The important thing is that this genetic change usually happens spontaneously/randomly . That is, it is not usually inherited from parents to children. So you don't need to feel too guilty about it.
Do boys get Rett Syndrome?
Rett Syndrome usually affects only girls. This is because the genetic change that causes it occurs on the X chromosome. As you know, a female has two X chromosomes (XX).
Because boys have one X chromosome and one Y chromosome (XY), this condition is very rare. If a boy has this variant on his only X chromosome, the symptoms can be very severe. This can lead to miscarriage or even death at birth.
Doctors call this condition in boys ``MECP2-related severe neonatal encephalopathy.'' This condition can also show symptoms similar to Rett syndrome, such as intellectual disability, seizures, and movement difficulties.
Complications of Rett Syndrome
A child with this condition is at risk of developing the following complications, some of which can be life-threatening:
- Aspiration pneumonia: A condition of pneumonia caused by food or drink entering the lungs.
- Epilepsy: Frequent seizures.
- Heart dysfunction: For example, conditions like Long QT syndrome .
- Lung or breathing problems.
How do doctors diagnose Rett Syndrome?
A doctor diagnoses Rett Syndrome by examining the child and performing the necessary tests. As a mother, you may suspect that something is wrong when your child is not meeting developmental milestones for their age, especially during the first year. That's when you should take your child to a pediatrician or your family doctor.
Your doctor will examine your child and look for symptoms. Then, they will do tests to rule out other conditions that may have similar symptoms. In most cases, the condition can be confirmed by a genetic blood test that looks for a change in the MECP2 gene. This genetic test does not require any special preparation or a hospital stay.
Diagnosis is usually made between the ages of 6 and 18 months, as this is when symptoms begin.
Because Rett Syndrome is such a rare condition, it can sometimes be difficult to get a diagnosis right away. It can take a while for the medical team to rule out all other conditions and confirm that this is the case. It can be frustrating to wait for answers, but having a clear diagnosis can help the medical team treat your child's symptoms.
How is Rett Syndrome treated?
Treatment options depend on the child's specific symptoms. For example, medications may be given for seizures and movement disorders. If the child has problems with motor skills and language abilities, the doctor may recommend treatments such as:
- Occupational therapy: Helps with daily tasks and improves hand function.
- Physical therapy: Helps with things like walking, balance, and muscle strengthening.
- Speech therapy: Helps improve speaking and communication.
For children 2 years of age and older, a drug called Trofinetide has shown promising results in clinical trials . It is the first treatment approved by the U.S. Food and Drug Administration (FDA) specifically for Rett Syndrome . It is not a cure, but it is considered a disease-modifying treatment. You should discuss this option with your medical team and make a decision together.
In addition, your child may benefit from:
- Wearing a brace or having surgery for scoliosis .
- Frequent checkups for heart abnormalities.
- Nutritional support.
- Special education programs at school.
There is currently no cure for Rett Syndrome . However, your child's doctors can help manage symptoms throughout their life.
When should I take my child to see a doctor?
If you notice that your child is not meeting developmental milestones appropriate for their age, especially after 6 months, see a doctor immediately.
If your child has been diagnosed with Rett Syndrome , if they have any side effects from treatment, or if they develop new symptoms or if existing symptoms get worse, inform your doctor.
What is the life expectancy of a child with Rett Syndrome?
Many people with Rett Syndrome live a good life into their 40s and beyond. If the symptoms are not severe, your child may have a normal lifespan. However, if health complications develop, life expectancy may be shortened.
The best person to ask about your child's life expectancy is their doctor. He or she can understand your child's specific situation and explain it to you.
Rett Syndrome Prognosis
Rett Syndrome is a lifelong condition. The symptoms affect each person differently. Your child may be able to control their movements, walk, and communicate on their own. However, they will need around-the-clock care for the rest of their life.
Also, your child will need to have regular appointments with their medical team to properly manage symptoms and prevent complications. In some cases of Rett Syndrome, complications can lead to early death.
Finding out that your child has a rare neurological disease can be overwhelming. You may feel anxious and sad that your child is not developing like other children. Although your child's body will need more time and care as he grows, don't give up hope. Doctors will be with you every step of the way to provide your child with the care he needs.
Researchers are finding new treatments that can help children with Rett Syndrome through clinical trials . If you have any questions about your child's outlook or treatment, ask your doctor.
The most important things to remember (Take-Home Message)
It's normal to feel overwhelmed when you find out your child has Rett Syndrome . But remember these things:
- You are not alone: There are other parents facing similar situations. Doctors, therapists, and support groups are ready to help you.
- Early detection is important: If you notice a delay in your child's development, seek medical advice immediately.
- Treatment can manage symptoms: Although there is no complete cure, treatment and therapies can improve the child's quality of life.
- Every child is different: Symptoms and the impact of the disease vary from person to person. Doctors will help you develop a care plan that is best suited for your child.
- Stay hopeful: Medical science is advancing and new research is being conducted, so it's important to stay positive.
The most important thing is to provide your child with love, care, and proper medical care.
` Rett Syndrome, genetic diseases, neurological diseases, child development, MECP2 gene, developmental delay
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