Gitelman Syndrome: Causes, Symptoms, and Treatment
Written by Sumiran Racherla, MD. Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Gitelman Syndrome?
A nephrologist, a doctor who treats kidney disease, is the specialist most often involved, because Gitelman syndrome is a kidney disorder. 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 Gitelman syndrome?
Gitelman syndrome is a kidney disorder. It causes an imbalance of charged atoms, called ions, in the body. The ions affected include potassium, magnesium, and calcium. The condition is also called Gitelman's syndrome. Another name is familial hypokalemia-hypomagnesemia, which describes low potassium and low magnesium.
Normally, the kidneys take salt back into the blood. In Gitelman syndrome, they lose too much salt in the urine. This loss also changes the levels of other ions in the body.
Symptoms
Signs usually appear in late childhood or adolescence. They can vary widely, even among family members. Common signs include:
- Painful muscle spasms, also called tetany.
- Muscle weakness or cramping.
- Dizziness.
- Salt craving, a strong wish for salty foods.
- A tingling or prickly feeling in the skin, most often on the face.
- Excessive tiredness, or fatigue.
- Low blood pressure in some people.
- A painful joint condition called chondrocalcinosis, in some people.
Some people have severe muscle cramping or paralysis. Slow growth has also been reported in severe cases. Gitelman syndrome may also raise the risk of a potentially dangerous heart rhythm problem called ventricular arrhythmia.
Causes and who gets it
Gitelman syndrome is usually caused by mutations in the SLC12A3 gene. Mutations are changes in a gene. Less often, changes in the CLCNKB gene cause it. The SLC12A3 gene gives instructions for making a protein called NCC. This protein helps the kidneys take salt back into the blood. Mutations can stop the protein from working normally. The kidneys then lose too much salt.
More than 140 mutations in the SLC12A3 gene have been found in people with this condition. Gitelman syndrome is inherited in an autosomal recessive pattern. Both copies of the gene in each cell must have changes. The parents each carry one changed copy and usually show no signs of the condition.
Gitelman syndrome affects an estimated 1 in 40,000 people worldwide.
How doctors diagnose it
Tests for the SLC12A3 gene are listed in the Genetic Testing Registry. A key feature of the condition is an imbalance of potassium, magnesium, and calcium in the body. Your doctor can explain which tests fit your situation.
Treatment
There is no cure yet, but treatment can improve symptoms and quality of life. For most people, treatment is daily potassium and magnesium supplements for life, along with careful monitoring of symptoms. People are also told to eat more salt. Some people also take a mild water pill that helps the kidneys keep potassium.
Very low potassium can cause muscle paralysis, trouble breathing, or an abnormal heart rhythm. Then potassium may be given through a vein. Your doctor decides which medicines you need. Follow your doctor's instructions before you change or stop any medicine.
When to see a doctor
See a doctor if you have muscle cramps, muscle weakness, tingling skin, dizziness, or tiredness that keeps coming back.
Call 911 or go to the emergency room if you have fainting, chest pain, trouble breathing, or sudden muscle weakness or paralysis.
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. Either one can see you for an evaluation. They can follow your symptoms over time. They can also help coordinate referrals to a kidney doctor or a geneticist. Neither one performs surgery.
Common questions
Is Gitelman syndrome life threatening?
It can be serious in some people, although most people have mild symptoms. Some have severe muscle cramping or paralysis. The condition may also raise the risk of a dangerous heart rhythm problem.
Is Gitelman syndrome inherited?
Yes. It is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have changes. Parents each carry one changed copy and usually show no signs of the condition.
How common is Gitelman syndrome?
It is rare. It affects an estimated 1 in 40,000 people worldwide.
Does Gitelman syndrome affect blood pressure?
Yes, some people with Gitelman syndrome have low blood pressure. Normal variants in the SLC12A3 gene may help explain blood pressure differences between people, but some studies have not found a link.
Sources
- MedlinePlus Genetics - Gitelman syndrome
- MedlinePlus Genetics - SLC12A3 gene
- National Organization for Rare Disorders (NORD) - Gitelman Syndrome
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.
