Menkes Syndrome: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Menkes Syndrome?
A medical geneticist (a doctor who diagnoses inherited conditions) and a pediatric neurologist (a doctor for children's brain and nerve problems) usually lead care for Menkes syndrome. A pediatrician (a children's doctor) often helps coordinate that care. 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 Menkes syndrome?
Menkes syndrome is a rare inherited disorder that affects copper levels in the body. Copper is needed for healthy bone, skin, hair, blood vessels, and nerves. In this disorder, copper builds up in some tissues, such as the small intestine and kidneys. The brain and other tissues end up with too little copper.
It is also called kinky hair syndrome. A milder form is called occipital horn syndrome. The milder form begins in early to middle childhood.
Symptoms
Symptoms usually begin in infancy. Babies may seem healthy for the first two to three months.
- Hair that is brittle, tangled, sparse, steely, or kinky.
- Slow weight gain and slow growth.
- Weak muscle tone, seizures, and delayed development.
- Trouble keeping a steady body temperature.
- Weak bones that can break more easily.
Some newborns are born early, with low body temperature, low blood sugar, or jaundice (yellow skin) that lasts a long time. Blood clots can form around the brain, and brain arteries can rupture or become blocked. Bleeding plus broken bones can be mistaken for child abuse. In rare cases, symptoms begin later in childhood.
Causes and who gets it
A change in the ATP7A gene causes the disorder. This gene helps control copper levels in the body. It is inherited in an X-linked recessive pattern, which means the gene is on the X chromosome. Males are affected much more often than females. Female carriers usually have no symptoms.
A carrier mother has a 50% chance of having an affected son with each pregnancy. In about one-third of cases, the gene change is new, so there is no family history.
How doctors diagnose it
Doctors may suspect it from the look of the hair at several months of age. Blood tests that show low copper and low ceruloplasmin support the diagnosis. These levels are often low in healthy newborns, so the blood tests alone are not enough. A gene test for ATP7A can confirm the diagnosis.
Carrier testing and prenatal diagnosis are available once the gene change is known in an affected family member.
Treatment
In January 2026, the FDA approved Zycubo (copper histidinate) injection as the first treatment for Menkes disease in children. It is a copper replacement given by injection under the skin. Starting early matters. NORD says treatment is ideally started within 28 days of birth. The FDA says children who started later also had a survival benefit.
Common side effects included infections, breathing problems, seizures, vomiting, fever, anemia, and reactions where the shot is given. Because copper can build up in the body, children on this medicine need close monitoring for copper toxicity. NORD says there is no complete cure. Genetic counseling is recommended for parents and families of affected children.
The FDA says children with the classic form typically do not live past age 3. Early treatment with copper may improve the outlook in some children.
When to see a doctor
Ask a doctor to check a baby who has sparse, kinky hair, slow growth, weak muscle tone, or seizures. Treatment works best when it starts early, so do not wait. Families with a history of the disorder can ask about genetic counseling.
Call 911 or go to the emergency room if your child has trouble or abnormal breathing, bluish or grey skin, or unconsciousness.
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. Such a doctor can do a first evaluation, help you reach a genetics clinic, and coordinate follow-up with specialists.
Common questions
Does Menkes syndrome affect girls?
It affects boys much more often than girls. It can occur in females in unusual genetic circumstances.
Is Menkes syndrome the same as occipital horn syndrome?
No, occipital horn syndrome is a milder form linked to the same gene. It begins in early to middle childhood.
Can Menkes syndrome be found before birth?
Yes, prenatal diagnosis is available once the specific gene change is known in an affected family member.
Is there a medicine for Menkes syndrome?
Yes, the FDA approved Zycubo (copper histidinate) injection in January 2026 for children. Children who began treatment within four weeks of birth had a 78% lower risk of death than untreated children.
Sources
- MedlinePlus Genetics - Menkes syndrome
- National Organization for Rare Disorders (NORD) - Menkes Disease
- U.S. Food and Drug Administration - FDA Approves First Treatment for Children With Menkes Disease
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.
