Acatalasemia: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Acatalasemia?
A primary care doctor can coordinate care for rare conditions, order the blood and genetic tests used to diagnose acatalasemia, and manage mild mouth problems. A dentist often helps with gum care. In some cases, patients are referred to specialists such as a hematologist, who treats blood disorders, or an infectious disease doctor.
What it is
Acatalasemia is a rare inherited condition in which the body makes very little of an enzyme called catalase. Catalase normally breaks down hydrogen peroxide, a harmful substance cells produce as part of using oxygen. Without enough catalase, hydrogen peroxide can build up and damage cells. Many people never notice problems, while others develop mouth sores or other issues.
Symptoms
The most common problem is soft tissue damage inside the mouth, including painful sores or ulcers on the gums, sometimes called gangrene of the gums. This happens because mouth bacteria produce hydrogen peroxide the body cannot break down. Many people have no symptoms at all, and problems vary from person to person.
Causes and who gets it
Acatalasemia is passed down through families when a child inherits a changed gene from both parents. Parents who carry only one changed gene usually have lower catalase levels but often stay healthy. The condition is rare in the United States and is seen more often in Japan and Korea. It affects males and females equally.
How doctors diagnose it
Doctors can check catalase levels with a blood test that measures how well a blood sample breaks down hydrogen peroxide. Genetic testing can confirm the diagnosis. Doctors may also examine the mouth and ask about a history of mouth sores, and family members might be offered testing.
Treatment
There is no medicine that adds catalase back to the body. Care focuses on preventing and treating problems, especially in the mouth. Good daily dental care lowers hydrogen peroxide made by mouth bacteria, and dentists can treat gum sores and infections when they appear. Care plans are often adjusted over time.
When to see a doctor
Anyone with repeated mouth sores, gum pain, or gum infections that do not heal should see a doctor or dentist. Signs of infection, such as fever along with mouth pain, need prompt medical attention. Early care keeps small problems from becoming larger ones.
How a direct primary care or concierge doctor fits in
A direct primary care doctor is paid with a flat monthly fee instead of insurance; a concierge doctor works similarly but usually charges more and often works alongside insurance. Because these doctors keep smaller patient lists, they have more time to answer questions about rare conditions like acatalasemia. They can order tests, watch mouth health over time, and manage mild cases directly, referring to a dentist or specialist when problems become serious.
Common questions
Is acatalasemia dangerous?
For most people it is mild, and many never have symptoms. Some people develop mouth sores or infections that need treatment, and effects vary from person to person.
Can acatalasemia be cured?
No treatment can add working catalase to the body. Care focuses on preventing problems through good dental hygiene and treating sores or infections when they happen.
Can I live a normal life with acatalasemia?
Most people with the condition live normal lives with few restrictions. Regular dental care and prompt treatment of mouth problems are the main habits that help.
Sources
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.
