Neuromyelitis Optica: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Neuromyelitis Optica?
A neurologist, a doctor who treats diseases of the brain, spinal cord, and nerves, usually leads care for neuromyelitis optica. Care can also include physical and occupational therapists, who help with movement and daily tasks. 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 neuromyelitis optica?
Neuromyelitis optica, or NMO, is also called neuromyelitis optica spectrum disorder (NMOSD) and Devic disease. It is a disease of the central nervous system, which is the brain and spinal cord. It causes swelling and damage to the optic nerve and the spinal cord. The optic nerve sends signals from the back of the eye to the brain.
NMO is an autoimmune disorder. This means the body's immune system attacks healthy cells by mistake. It is often confused with multiple sclerosis (MS) because the symptoms are similar. The two conditions are different and have different treatments.
There are two types. Relapsing NMO is the type most people have. Symptoms come in episodes, with long breaks between them. Monophasic NMO is less common. It happens only once.
Symptoms
Symptoms can range from mild to severe. They include:
- Eye pain, blurred vision, partial vision loss, or blindness in one or both eyes.
- Weakness, numbness, or paralysis of the arms and legs.
- Loss of bladder and bowel control.
- Hiccups with no clear cause, and nausea or vomiting that does not go away.
- Pain around the chest and waist, and uncontrollable itching.
- Trouble swallowing.
Each episode can damage new areas of the spinal cord and brain. This can make symptoms worse and daily tasks harder.
Causes and who gets it
NMO happens when the immune system attacks the eyes and spinal cord. Most people with NMO have antibodies that attack a harmless body substance called aquaporin-4. Antibodies are proteins the immune system makes. Their attack damages the support cells that normally protect nerves.
There is no identifiable cause. The disease may start after an infection. People with a personal or family history of autoimmune disorders may also be at risk.
Most people first have symptoms in childhood or in their 40s. NMO does not typically run in families. Women, Black Americans, and people with other autoimmune disorders are more likely to be affected.
How doctors diagnose it
Your doctor will do a physical exam and ask about your symptoms and medical history. Doctors may do tests to tell NMO apart from MS.
A blood test can look for aquaporin-4 antibodies. Finding them is a specific sign of NMO and can help tell it from MS. However, not everyone with NMO has these antibodies.
Other tests may include an MRI (magnetic resonance imaging), which can show damaged spots in the optic nerves, brain, and spinal cord. Eye tests and retinal scans may be done. A lumbar puncture, also called a spinal tap, may be done too.
Treatment
There is no cure for NMO. Treatment focuses on relieving symptoms, preventing damage, and preventing attacks over the long term.
During an attack, doctors may use corticosteroids, which are anti-inflammatory medicines. If those do not work or the attack is severe, plasma exchange may be used. Plasma exchange is a procedure that filters the blood to remove harmful antibodies.
To prevent attacks, at least three medicines made for NMO are approved by the U.S. Food and Drug Administration (FDA). Doctors sometimes use other medicines that quiet the immune system overall. People often take these medicines long term.
Medicines and other therapies can help with pain, stiffness, spasms, and bladder or bowel problems. Some people need assistive devices, physical therapy, or occupational therapy to help with walking, balance, and communication.
Early diagnosis and timely treatment with immune-quieting medicines improve the outlook.
When to see a doctor
Contact your provider immediately if you have blurred vision, numb limbs, or a severe headache. If you have NMO, stay in touch with your provider.
NMO can cause serious problems such as severe optic nerve damage leading to vision loss or blindness, and paralysis. Muscle weakness can make breathing hard and can cause life-threatening respiratory failure, which means the lungs cannot work well enough.
Call 911 or go to the emergency room if you have trouble breathing, faint, cannot speak, cannot move, have sudden weakness or paralysis, or suddenly lose 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. Such a doctor can review your symptoms, refer you to a neurologist, and help coordinate your care and follow-up over time.
Common questions
Is neuromyelitis optica the same as multiple sclerosis?
No. The two conditions have similar symptoms, but they are different diseases with different treatments. A blood test for aquaporin-4 antibodies can help tell them apart.
Can neuromyelitis optica be cured?
No, there is no cure. Medicines can calm the immune system so it is less likely to attack the eyes or spinal cord. Treatment also focuses on relieving symptoms and preventing attacks.
Can neuromyelitis optica cause blindness?
Yes, it can. Severe optic nerve damage can lead to vision loss or blindness. It can also cause paralysis and permanent limb disability.
Can neuromyelitis optica come back after an episode?
Yes, in the relapsing type. Most people have this type, with symptoms that come in episodes. There are long breaks of months or years between episodes.
Sources
- MedlinePlus - Neuromyelitis optica spectrum disorder
- National Institute of Neurological Disorders and Stroke - Neuromyelitis Optica Spectrum Disorder
- MedlinePlus Genetics - Neuromyelitis optica
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.
