What is DiGeorge Syndrome? Symptoms, Causes, & Treatment

DiGeorge syndrome is a genetic condition that happens when a small piece of chromosome 22 is missing. This missing piece affects how certain parts of your body develop before birth, particularly your immune system, heart, and parathyroid glands.

About 1 in 4,000 babies are born with this condition. While it might sound overwhelming at first, many people with DiGeorge syndrome live full, healthy lives with proper medical care and support.

What is DiGeorge Syndrome?

DiGeorge syndrome occurs when your body is missing a tiny section of genetic material on chromosome 22. This deletion affects the development of several body systems during pregnancy.

The condition is also known as 22q11.2 deletion syndrome or velocardiofacial syndrome. These different names all refer to the same genetic change, though doctors might use different terms depending on which symptoms are most prominent.

The missing genetic material contains instructions for making proteins that help your body develop properly. When these instructions are absent, it can affect your thymus gland, parathyroid glands, heart, and facial features.

What are the symptoms of DiGeorge Syndrome?

The symptoms of DiGeorge syndrome can vary greatly from person to person. Some people have mild symptoms that barely affect their daily life, while others may have more complex medical needs.

Here are the most common symptoms you might notice:

• Frequent infections due to immune system problems
• Heart defects that may cause breathing difficulties or poor feeding in babies
• Low calcium levels causing muscle cramps or seizures
• Cleft palate or other feeding problems
• Distinctive facial features like a small chin or narrow eyes
• Speech delays or learning difficulties
• Kidney problems
• Hearing loss

Many children with DiGeorge syndrome also experience developmental delays. They might walk or talk later than other children, or need extra support with learning and social skills.

Some people also develop mental health conditions like anxiety, depression, or attention difficulties as they grow older. These challenges are manageable with proper support and treatment.

What causes DiGeorge Syndrome?

DiGeorge syndrome is caused by a missing piece of chromosome 22. This deletion happens randomly during the formation of reproductive cells or very early in pregnancy.

In about 90% of cases, this genetic change occurs spontaneously. This means neither parent carries the deletion, and it's not something they could have prevented or predicted.

However, in about 10% of cases, one parent does carry the deletion and can pass it to their child. If you have DiGeorge syndrome, there's a 50% chance you could pass it to each of your children.

The deletion isn't caused by anything parents do during pregnancy. It's not related to diet, lifestyle, medications, or environmental factors.

When to see a doctor for DiGeorge Syndrome?

You should contact your doctor if you notice signs of frequent infections, feeding difficulties, or developmental delays in your child. Early diagnosis and treatment can make a significant difference in outcomes.

Seek immediate medical attention if your child experiences seizures, severe breathing problems, or signs of a serious infection like high fever or difficulty breathing.

If you're pregnant and have DiGeorge syndrome yourself, genetic counseling can help you understand the risks and plan for your baby's care.

Regular check-ups are important for anyone with DiGeorge syndrome, even if symptoms seem mild. Many complications can be prevented or treated more effectively when caught early.

What are the risk factors for DiGeorge Syndrome?

The main risk factor for DiGeorge syndrome is having a parent who carries the 22q11.2 deletion. If one parent has the condition, each child has a 50% chance of inheriting it.

Advanced maternal age slightly increases the risk, but DiGeorge syndrome can occur in pregnancies at any age. Most cases happen in families with no previous history of the condition.

There are no lifestyle or environmental factors that increase your risk of having a child with DiGeorge syndrome. The genetic deletion occurs randomly in most cases.

What are the possible complications of DiGeorge Syndrome?

Understanding potential complications can help you and your healthcare team stay alert for problems and address them quickly. Remember that not everyone with DiGeorge syndrome will experience all of these complications.

Common complications include:

• Recurrent infections due to immune system weakness
• Heart problems requiring surgery or ongoing monitoring
• Low calcium levels causing seizures or muscle problems
• Speech and language delays
• Learning disabilities or intellectual challenges
• Behavioral or mental health issues

Less common but more serious complications might include:

• Severe immune deficiency requiring bone marrow transplant
• Life-threatening heart defects
• Severe kidney problems
• Autoimmune disorders where the body attacks its own tissues
• Schizophrenia or other psychiatric conditions in adulthood

Regular monitoring and preventive care can help catch and treat many of these complications before they become serious. Your healthcare team will create a personalized plan based on your specific symptoms and needs.

How is DiGeorge Syndrome diagnosed?

DiGeorge syndrome is diagnosed through genetic testing that looks for the missing piece of chromosome 22. This test can be done with a simple blood sample.

Your doctor might first suspect DiGeorge syndrome based on physical symptoms like heart defects, distinctive facial features, or frequent infections. They'll also ask about your family history and developmental milestones.

Additional tests might include blood work to check calcium levels and immune function, heart imaging to look for defects, and hearing or kidney tests depending on your symptoms.

The genetic test, called chromosomal microarray or FISH testing, can confirm the diagnosis with near 100% accuracy. Results typically take a few days to a week.

What is the treatment for DiGeorge Syndrome?

Treatment for DiGeorge syndrome focuses on managing specific symptoms and preventing complications. There's no cure for the genetic condition itself, but many symptoms can be effectively treated.

Common treatments include:

• Calcium and vitamin D supplements for low calcium levels
• Antibiotics to prevent infections
• Heart surgery for cardiac defects
• Speech therapy for communication delays
• Special education services for learning difficulties
• Mental health support for behavioral challenges

Some people with severe immune problems might need more intensive treatments like immunoglobulin therapy or, in rare cases, thymus transplantation.

Your healthcare team will likely include specialists like cardiologists, immunologists, endocrinologists, and developmental pediatricians. They'll work together to create a comprehensive care plan tailored to your specific needs.

How to provide home care during DiGeorge Syndrome?

Home care focuses on preventing infections, supporting development, and maintaining good overall health. Simple daily practices can make a big difference in your quality of life.

To prevent infections, practice good hand hygiene and avoid crowded places during illness outbreaks. Keep up with recommended vaccines, though some live vaccines might not be appropriate depending on your immune function.

Support speech and language development by reading together, singing songs, and encouraging conversation. Early intervention services can provide additional support at home.

Monitor for signs of low calcium like muscle cramps, tingling, or seizures. Take prescribed supplements consistently and maintain regular meal times.

Create a supportive environment for learning and development. This might include visual schedules, consistent routines, and breaking tasks into smaller steps.

How should you prepare for your doctor appointment?

Before your appointment, write down all symptoms you've noticed, including when they started and how often they occur. This helps your doctor understand the full picture.

Bring a list of all medications and supplements you're taking, including doses and how often you take them. Also note any allergies or reactions to medications.

Prepare questions about your care plan, what symptoms to watch for, and when to seek immediate medical attention. Don't hesitate to ask about anything that concerns you.

If you're seeing a new specialist, bring copies of recent test results and a summary of your medical history. This helps them understand your current situation quickly.

What's the key takeaway about DiGeorge Syndrome?

DiGeorge syndrome is a manageable genetic condition that affects people differently. With proper medical care and support, many people with this condition live full, productive lives.

Early diagnosis and treatment are crucial for the best outcomes. Regular monitoring helps catch and treat complications before they become serious problems.

Remember that having DiGeorge syndrome doesn't define you or your child. While it may present certain challenges, it also comes with unique strengths and perspectives that contribute to your family and community.

Connect with support groups and resources in your area. Other families dealing with DiGeorge syndrome can provide valuable insights, encouragement, and practical advice.