Glutaric Acidemia Type 2: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Glutaric Acidemia Type 2?
A primary care doctor usually manages day-to-day care. Most patients also see a metabolic specialist, and a geneticist often helps confirm the diagnosis and test family members. 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 it is
Glutaric acidemia type 2 is a rare inherited condition that affects how the body turns fat and some proteins into energy. Doctors also call it multiple acyl-CoA dehydrogenase deficiency. Without the needed enzymes, certain substances build up in the blood and urine, especially during illness or fasting.
Symptoms
Symptoms vary a lot. Some babies show signs within days of life; others not until later. Common signs include low blood sugar, extreme sleepiness, poor feeding, vomiting, and weak or floppy muscles. Older children and adults may have muscle weakness and pain after exercise or illness.
Causes and who gets it
A child must receive one changed copy of the gene from each parent; parents with only one changed copy usually have no symptoms. The changed genes affect enzymes needed to break down fats and certain amino acids. Some babies are diagnosed through newborn screening.
How doctors diagnose it
Doctors often find the condition through newborn screening. If the result is unusual, they may order blood and urine tests, and genetic testing can confirm the diagnosis.
Treatment
Treatment focuses on preventing dangerous buildup. Most people need to eat regularly and avoid long periods without food, often following a diet lower in fat and adjusted for protein. Doctors often prescribe riboflavin (vitamin B2) and L-carnitine, which helps clear the harmful buildup. During illness, a sick-day plan may involve extra fluids and sugar.
When to see a doctor
Call a doctor right away if there is vomiting, refusal to eat, unusual sleepiness, confusion, or muscle weakness. These can be signs of a metabolic crisis. In an emergency, such as a seizure or trouble breathing, call 911.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee and can handle routine monitoring, prescribe supplements, and manage the sick-day plan. A concierge doctor usually charges more and often works alongside insurance. These doctors should refer anyone with a suspected metabolic crisis to a specialist.
Common questions
Is glutaric acidemia type 2 the same as glutaric acidemia type 1?
No. They are different inherited conditions with different enzyme problems. Type 2 affects the body's energy production from fats and proteins. Type 1 affects a different breakdown pathway.
Can adults find out they have this condition?
Yes. Some people have a milder form and are not diagnosed until adulthood. This often happens after muscle weakness or pain prompts testing. Newborn screening has made early diagnosis more common in recent years.
Can this condition be cured?
There is no cure, but treatment can often control symptoms and prevent crises. How well someone does depends on the severity of their form of the condition. Results differ from person to person.
Should siblings be tested?
Because the condition is inherited, brothers and sisters have a chance of also having it. A geneticist can arrange testing and explain the chances to the family.
Sources
- NIH Genetic and Rare Diseases Information Center - Multiple acyl-CoA dehydrogenase deficiency
- National Organization for Rare Disorders (NORD) - Glutaric Aciduria Type I
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.
