Dihydrolipoamide Dehydrogenase Deficiency: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Dihydrolipoamide Dehydrogenase Deficiency?
A primary care doctor usually manages day-to-day care. Most patients also see a metabolic specialist, often a medical geneticist, and a neurologist may help with seizures. These doctors usually work together as a team. 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
Dihydrolipoamide dehydrogenase deficiency is a rare inherited condition. It affects how the body turns sugar from food into energy. The enzyme does not work well, so cells cannot process energy the usual way, leading to a buildup of acid in the blood called metabolic acidosis.
Symptoms
Symptoms often start in infancy or early childhood. Many babies have feeding problems, vomiting, low muscle tone, and trouble gaining weight. Some children develop seizures or developmental delay, and the liver may not work normally. Symptoms can worsen during illness, fasting, or physical stress, and severity varies from person to person.
Causes and who gets it
This condition is genetic and passed down through families. A child must inherit a changed copy of the DLD gene from both parents; parents carrying only one copy usually have no symptoms. It affects people of all backgrounds but may be slightly more common in certain populations.
How doctors diagnose it
Doctors often start with blood and urine tests looking for signs the body is not breaking down energy properly. Genetic testing can confirm the diagnosis by finding changes in the DLD gene. Early diagnosis matters because treatment works best when it starts soon.
Treatment
There is no cure. Treatment focuses on managing symptoms and preventing crises, often with a special diet planned by a metabolic specialist. Some patients take supplements such as thiamine if recommended. During illness, quick medical care can prevent a metabolic crisis, and results differ from person to person.
When to see a doctor
See a doctor if a child has repeated vomiting, extreme sleepiness, low muscle tone, or developmental delays. Seek emergency care for trouble breathing, seizures, or a very limp or unresponsive child. Diagnosed patients should get medical help during any illness with fever, vomiting, or poor eating.
Direct primary care and concierge care
A direct primary care doctor charges a flat monthly fee instead of billing insurance for visits. A concierge doctor offers similar access but usually costs more and often works alongside insurance. They can manage stable, ongoing care and will refer patients to a metabolic specialist or emergency care during a crisis.
Common questions
Is dihydrolipoamide dehydrogenase deficiency curable?
No, there is no cure. Treatment aims to control symptoms, prevent metabolic crises, and support normal development as much as possible.
Can adults have this condition?
Yes, though symptoms usually begin in infancy or childhood. Some people with milder forms are not diagnosed until later in life.
Should siblings be tested?
Siblings have a chance of also having it. Genetic testing can find out, and a genetic counselor can help families understand the results.
Sources
- NIH Genetic and Rare Diseases Information Center - Pyruvate dehydrogenase E3 deficiency
- MedlinePlus Genetics - Dihydrolipoamide dehydrogenase deficiency
- MedlinePlus - Metabolic Disorders
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.
