Aicardi-Goutières syndrome: Causes, Symptoms, and Treatment
Medically reviewed by Achuta Uppu, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Aicardi-Goutières syndrome?
A pediatric neurologist (a children's brain and nerve doctor) usually leads care for Aicardi Goutieres syndrome, along with a medical geneticist (a doctor who treats inherited conditions). AGS is an inherited disorder that affects the brain, the immune system, and the skin. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is Aicardi Goutieres syndrome?
Aicardi Goutieres syndrome (AGS) is a rare inherited disorder. It mainly affects the brain, the immune system, and the skin. It often begins in the first year of life. AGS can look like an infection that a baby is born with, but no infection is found. Doctors call it a mimic of congenital infection (a condition that copies the signs of an infection present at birth).
There are two forms. The early-onset form starts within the first months of life. The later-onset form starts after age 1, following normal development at first. AGS can cause inflammation and damage in the brain. It can also slow the growth of the head, leading to a small head size. Calcium deposits can build up in the brain. Most people with AGS have profound intellectual disabilities.
Symptoms
Early signs in babies can include:
- Extreme fussiness and poor feeding.
- Fevers without any infection.
- Loss of skills they had already learned.
- Seizures (sudden bursts of uncontrolled electrical activity in the brain).
- Muscle stiffness, unusual muscle tensing, or weak muscle tone.
- Skin sores called chilblains on the fingers, toes, nose, or ears. Cold can make them worse.
- Vision problems, including vision loss and glaucoma (high pressure inside the eye).
Some newborns also have an enlarged liver and spleen and a low platelet count (platelets are cells that help blood clot). Later problems can involve the thyroid, lungs, heart, liver, muscles, and joints.
Causes and who gets it
Changes in several genes can cause AGS. These include TREX1, RNASEH2A, RNASEH2B, RNASEH2C, SAMHD1, IFIH1, and ADAR. Genes carry the body's instructions. Some of these genes normally help make enzymes that break down DNA and RNA, the molecules that hold genetic information. When the genes do not work, DNA and RNA can build up in cells. The body can mistake them for a virus and respond with too much interferon, a protein that fights infection. This immune response can damage the brain and skin.
Most cases are inherited in an autosomal recessive pattern. A child must get a changed gene from both parents. Parents who carry one changed copy usually have no signs. Some cases come from a new gene change in the child. AGS is rare. More than 500 cases have been described.
How doctors diagnose it
Doctors look at symptoms and do tests. Brain imaging can show calcium deposits and damage to the white matter. The fluid around the brain and spinal cord can show white blood cells and interferon proteins. Genetic testing can find the changed gene and confirm the cause.
Treatment
There is no treatment that cures AGS yet. Care focuses on easing symptoms and giving support.
JAK inhibitors (medicines that calm the immune system) can lower interferon activity. One of them, baricitinib, has been shown to help people with AGS reach new milestones and learn new skills. Care teams also watch nutrition and breathing, and they manage problems in other organs. A team of doctors from several fields helps plan care. Genetic counseling is recommended for families.
When to see a doctor
Call 911 if a baby has a seizure, has trouble breathing, has bluish or grey skin, or is very sleepy and hard to wake. Call the doctor right away if a baby stops feeding well or starts losing skills. Fevers without an infection also need prompt care. Sudden eye pain or vision changes need care right away, since glaucoma can harm vision.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. This doctor can track growth and development, watch for fevers and skin sores, and coordinate care with the specialists. They can also help with long-term care planning.
Common questions
Is Aicardi Goutieres syndrome inherited?
Yes. Most cases follow an autosomal recessive pattern, so a child gets a changed gene from both parents. Some cases come from a new gene change in the child.
Can AGS be cured?
No treatment can cure AGS yet. JAK inhibitors like baricitinib can lower interferon activity and have helped some people gain skills. Care focuses on easing symptoms and giving support.
What causes the brain problems?
Too much interferon, a protein that fights infection, is made in the body. The body acts as if it is fighting a virus. This immune response can damage the brain and skin.
How is AGS diagnosed?
Doctors use brain imaging and tests of the fluid around the brain and spinal cord. Genetic testing can find the changed gene.
Sources
- MedlinePlus Genetics - Aicardi-Goutieres syndrome
- NORD - Aicardi-Goutieres Syndrome
- NIH GARD - Aicardi Goutieres syndrome
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
