Calcinosis Explained | Calcification in Organs and Soft Tissue

What Is Hypercalciuria?

Hypercalciuria is a condition that occurs when there is too much calcium in the urine. It can affect both children and adults and may be associated with kidney stones, bone issues, and disorders that impact how the body regulates calcium and phosphate.

In rare diseases such as Generalized Arterial Calcification of Infancy (GACI), ENPP1 Deficiency, and ABCC6 Deficiency, hypercalciuria may develop as part of the body’s abnormal mineral regulation process. These conditions are linked to problems controlling calcium deposits in the body, including calcification in arteries, joints, and soft tissues.

What Causes Hypercalciuria in GACI and Related Conditions?

In people with GACI and related disorders, the body may not produce enough pyrophosphate, a natural substance that helps prevent abnormal calcium buildup. Low pyrophosphate levels can contribute to calcification in arteries and other tissues.

Because calcium regulation is disrupted, some individuals may also develop hypercalciuria, where excess calcium is released into the urine through the kidneys. This may happen naturally as part of the disease process or in response to certain treatments and supplements used to manage symptoms.

Conditions commonly associated with hypercalciuria include:

  • GACI (Generalized Arterial Calcification of Infancy)
  • ENPP1 Deficiency
  • ABCC6 Deficiency
  • Chronic calcification disorders
  • Kidney and bone mineral imbalances

What Are the Symptoms of Hypercalciuria?

Some people with hypercalciuria do not have noticeable symptoms. Others may experience symptoms related to the kidneys or urinary tract.

Common symptoms may include:

  • Kidney stones
  • Frequent urination
  • Blood in the urine
  • Back or abdominal pain
  • Pain during urination
  • Bone weakness or discomfort

For patients with GACI and related conditions, ongoing monitoring is important because calcium imbalances may contribute to complications affecting the kidneys, bones, and cardiovascular system.

How Is Hypercalciuria Diagnosed?

Doctors typically diagnose hypercalciuria using urine and blood tests that measure calcium levels. In some cases, imaging tests may also be used to check for kidney stones or calcification.

Testing may include:

  • 24 hour urine calcium testing
  • Blood calcium and phosphate levels
  • Kidney ultrasounds
  • CT scans or X-rays
  • Genetic testing for ENPP1 or ABCC6 mutations

Early diagnosis and monitoring can help providers manage symptoms and reduce long-term complications.

How Is Hypercalciuria Treated?

Treatment for hypercalciuria depends on the underlying cause and severity of symptoms. For individuals with GACI and related disorders, treatment often focuses on managing mineral balance and reducing abnormal calcification.

Treatment options may include:

  • Increased hydration
  • Dietary adjustments
  • Medications to lower calcium loss
  • Monitoring kidney function
  • Managing calcification in arteries and soft tissues
  • Specialized care from rare disease experts

Some patients may also participate in clinical research focused on new GACI treatments and therapies targeting ENPP1/ABCC6 Deficiency pathways.

Related Resources

To learn more about hypercalciuria and rare calcification disorders, explore these pages:

Frequently Asked Questions About Hypercalciuria

Is hypercalciuria common in GACI?

Hypercalciuria can occur in some individuals with GACI and related disorders due to abnormal calcium and phosphate regulation in the body.

How does hypercalciuria relate to calcification in arteries?

Both hypercalciuria and calcification in arteries may result from the body’s inability to properly regulate calcium and pyrophosphate levels in conditions like ENPP1 Deficiency.

Is hypercalciuria treatable?

Yes. Treatment may include hydration, medications, dietary changes, and monitoring by specialists experienced in rare calcification disorders.