Are you aware of ROHHAD Syndrome? Does your child have these symptoms?

Has your little one suddenly started getting really big? Or have you noticed that they have difficulty breathing while sleeping? Sometimes these can be signs of a very rare condition called ROHHAD Syndrome. Let's talk about this in a little more detail, because it's very important to be aware of things like this.

What is ROHHAD Syndrome?

Simply put, ROHHAD Syndrome is a rare, life-threatening condition that affects young children. It mainly affects the endocrine system, autonomic nervous system, and breathing. Children with this condition can gain significant weight in a very short period of time . They can also experience changes in breathing patterns, behavior, and emotional regulation while sleeping and sometimes while awake.

ROHHAD syndrome is a relatively new medical condition. It was first identified and described in 1965. To think about it, there have been fewer than 200 cases of this condition reported worldwide. So you can imagine how rare it is. Medical experts are still researching the condition to find the exact cause and find a permanent cure. Currently, there is no specific test or treatment for ROHHAD syndrome. Therefore, doctors treat each child individually based on their symptoms.

What are the symptoms of ROHHAD syndrome?

Children with ROHHAD syndrome are usually healthy and developing normally before symptoms appear. Although symptoms can appear as early as age 9, most children show their first symptoms between the ages of 2 and 4.

The name 'ROHHAD' is derived from the first letters of the four main symptoms of this disease. Let's take a look at what they are:

• (RO) Rapid-onset Obesity: This is when a child's appetite suddenly increases dramatically, leading to a significant weight gain of 20-30 pounds (9-13 kilograms) within a short period of time, usually between three and twelve months. This is often the first sign of obesity. Think about it, it's not just weight gain, it's a very rapid, noticeable change.

• (H) Hypothalamic Dysregulation: The hypothalamus is a part of your brain that controls the pituitary gland. It also regulates many things in the body, such as growth, weight, appetite, puberty, emotions, and behavior. So, if there is any problem in its functioning, the child may experience symptoms such as obesity, short stature, seizures, growth retardation, increased or decreased urination, and early or delayed puberty . Not only that, but conditions such as hypothyroidism and diabetes mellitus may also occur.

• (H) Hypoventilation: Children with ROHHAD syndrome cannot control their breathing properly. This means that when the oxygen level in the blood decreases or the carbon dioxide level increases, the body does not breathe deeply or quickly enough to compensate. This is a very dangerous condition. Sometimes, it can occur suddenly, such as after a minor respiratory infection, such as a cold, or after anesthesia.

• (AD) Autonomic Dysregulation: Our body's autonomic nervous system (ANS) controls basic functions that we cannot control, such as breathing, digestion, heart rate, and body temperature. So, children with damage to this autonomic nervous system may experience symptoms such as an abnormally slow heart rate (Bradycardia), low body temperature, and decreased pain perception . Imagine, feeling less pain means that even in a serious accident, the child may not be aware of it.

What are the causes of ROHHAD syndrome?

In fact, doctors have yet to find a definitive cause for ROHHAD syndrome. However, there are three main theories currently being researched that could explain it.

1. Genetics: Many researchers believe that ROHHAD syndrome is caused by a genetic mutation . However, the exact gene is not yet known. Everything in our body is controlled by genes, so any change in it could affect it.

2. Epigenetics: Some researchers believe that genes that control certain functions in our bodies can be turned on when needed and turned off when not needed. This is called epigenetics. This idea is based on a study conducted on identical twins. In it, one child developed ROHHAD syndrome, while the other did not. So, it can be thought that not only genes, but also differences in the way those genes function may affect this.

3. Autoimmunity: Some studies have found a link between ROHHAD syndrome and autoimmune diseases , which are conditions in which the body's own immune system attacks its own cells. In one study, two children with ROHHAD syndrome were found to have antibodies called immunoglobulins in the cerebrospinal fluid (CSF) , the fluid that surrounds the brain and spinal cord. Using this information, the researchers concluded that there was inflammation in the central nervous system (CNS) , the brain and spinal cord. This means that the body's own immune system may be mistakenly attacking the brain.

What are the complications of ROHHAD syndrome?

In addition to the main symptoms we discussed earlier, children with ROHHAD syndrome can develop other complications , that is, additional health problems. It is important to be aware of these as well:

• Mental and behavioral problems: These children may experience conditions such as restlessness, aggression, hyperactivity, constant fatigue, anxiety, depression, and intellectual disability . These can affect the child's daily life as well as the family.

• Nervous system problems: Children with ROHHAD syndrome may experience conditions such as seizures, abnormal eye movements (nystagmus), sleep apnea, or developmental disorders .

• Metabolic disorders: The most common metabolic disorders among these children are Diabetes Mellitus, Insulin resistance, Impaired glucose intolerance, and Steatotic (fatty) liver disease. These are conditions that can have long-term health consequences.

• Neural tumors: Between 40% and 56% of children with ROHHAD syndrome develop tumors of the nerves. One example is a type of tumor called a ganglioneuroma . Most of these tumors are benign , but they can sometimes be malignant . Therefore, doctors are always on the lookout for this.

• Cardiorespiratory arrest: This is the most dangerous complication. It is a sudden cessation of breathing and cardiac activity. This can be life-threatening.

How is ROHHAD syndrome diagnosed? (Diagnosis)

Currently, there is no single test that can definitively confirm ROHHAD syndrome. Instead, a diagnosis is made by a team of medical experts based on a child's unique combination of symptoms . This is like a detective, gathering evidence and coming to a conclusion.

To be diagnosed with ROHHAD syndrome, a child must meet the following criteria:

• Both symptoms of sudden onset of extreme obesity and hypoventilation during sleep must be present.
• Symptoms of hypothalamic dysfunction (e.g., rapid weight gain, hypothyroidism, or changes in puberty - early or late) must be present.
• It is important to confirm that there is no mutation (gene variant) in the gene `PHOX2B`. This is important to distinguish it from `CCHS (Congenital Central Hypoventilation Syndrome),` another condition that has some symptoms similar to ROHHAD syndrome (e.g., decreased breathing while sleeping).
• These symptoms may not be apparent in the first few years of life. They usually begin later.

Because ROHHAD syndrome is a very rare condition, children can often be misdiagnosed at first. Therefore, if you have these symptoms, it is very important to seek proper advice from an experienced medical team.

How is ROHHAD syndrome treated? (Treatment)

The treatment for ROHHAD syndrome varies from child to child, depending on the symptoms. Not every child can be given the same treatment plan, because everyone's situation is different. However, one thing is common to all. If a child with ROHHAD syndrome shows breathing abnormalities while sleeping, they will need to use a machine called `CPAP` or `BiPAP` to help them breathe. Over time, they may need to use a `ventilator` to fully support the breathing process. This is a life-saving procedure.

When treating children with ROHHAD syndrome, the help of pediatricians in various fields is needed. For example:

• Pulmonologists
• Neurologists
• Endocrinologists (doctors who specialize in endocrine glands (hormones))
• Otolaryngologists (Ear, Nose, Throat Specialists)
• Cardiologists
• Sleep specialists
• Nutritionists
• Oncologists
• Psychologists
• Psychiatrists

It is through the unity of all of these people that we strive to provide the best treatment for the child.

What is the future of children with ROHHAD syndrome? (Outlook)

In fact, there is currently no cure for ROHHAD syndrome. The main goal of treatment is to manage the symptoms that are unique to each child and maintain the child's quality of life as best as possible.

ROHHAD Syndrome and Life Expectancy

Because ROHHAD syndrome is such a rare condition, it is difficult to accurately estimate the life expectancy. There is not enough data on it yet.

However, the main cause of death from this disease is a complication called cardiorespiratory arrest, which is the sudden cessation of the functioning of the heart and respiratory system .

Can this be prevented? (Prevention)

There is currently no known way to prevent ROHHAD syndrome - at least not yet.

ROHHAD syndrome is a rare and relatively new condition. So research into this condition is still in its early stages. When you think about your child’s health, every day that goes by without answers can feel like an eternity. We understand that. So, be sure to seek support from your doctor. He/she will be able to advise you on the treatments needed to manage your child’s symptoms, as well as sources of information about this condition.

The most important things we should take home from this story (Take-Home Message)

Okay, so now you have some understanding of the ROHHAD Syndrome we talked about. Here are some important things to remember:

• ROHHAD syndrome is a very rare, but serious condition.
• The main symptoms are sudden weight gain, difficulty breathing, and problems with the hormones and autonomic nervous system.
• There is no specific cause or permanent cure for this yet. Treatment is based on the symptoms that arise.
• If you suspect that your child has these symptoms, don't panic, but see a qualified doctor immediately for advice.
• Because this is a rare disease, it may take some time to get an accurate diagnosis. But don't give up.
• It is very important to follow the doctors' advice and provide the child with the necessary support.

Remember, you are not alone. It is important to seek support from doctors, family, and, if necessary, counseling services when dealing with situations like this.

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