What is XLH?

XLH, or X-linked hypophosphatemia, is a hereditary, progressive, and lifelong disease that can affect children and adults regardless of age. It can have serious consequences in the bones, muscles, and teeth.


Rachel, with her son Benjamin and her daughter Brooke, living with XLH

See the symptoms

Simon, living with XLH

See the symptoms

Becky, living with XLH


An icon of a family to describe the hereditary nature of XLH

XLH is an inherited disease, which means it runs in families. In some cases, XLH may occur spontaneously.


An icon to depict the progressive nature of XLH

New symptoms of XLH may appear at any age and can worsen over time. Understand the progression of disease.


An icon to depict lifelong impact of XLH

Individuals with XLH will continue to experience symptoms throughout life. These symptoms may be managed.

Learn how XLH is managed

Watch how Cheryl stays positive while managing the symptoms of her XLH.


As part of the in-clinic XLH-DMP, you can track your or your child’s health over time.

See details

A specialist in X-linked hypophosphatemia (XLH)

As a parent, you are the first to recognize when things are out of the ordinary with your child. As an adult, you know yourself best. Trust your instincts and raise your concerns with your child’s or your doctor.

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