Prader-Willi syndrome affects much more than appetite. Behavioral and emotional challenges—including rigidity, anxiety, compulsive behaviors, repetitive questioning, and temper outbursts—can have a significant impact on daily life.
For researchers developing treatments for PWS, measuring these symptoms is an important challenge. The PWS Profile was developed to provide researchers with a reliable way to measure a broad range of behavioral and emotional symptoms specific to PWS.
What Is the PWS Profile?
The PWS Profile is a caregiver-completed questionnaire designed specifically to measure behavioral and emotional symptoms associated with Prader-Willi syndrome.
The tool was developed by researchers at Vanderbilt University, including Elisabeth Dykens, Elizabeth Roof, and Haille Hunt-Hawkins. The researchers recognized the need for a PWS-specific measure that could capture behavioral and emotional symptoms beyond hyperphagia.
The PWS Profile includes 57 questions and was evaluated using responses from 761 parents of children and adults with PWS age 5 and older who participated through the Global PWS Registry.
Why do we need PWS-specific tools?
When developing new treatments, researchers need a reliable way to show potential improvements in symptoms.
For many medical conditions, measuring treatment success is straightforward. For example, changes in weight or blood hormone levels are easy to track. But with PWS, many of the symptoms are behavioral or emotional features that are complex and unique to this syndrome. This makes it difficult for researchers to prove whether a new treatment is working.
To solve this problem, researchers need tools specifically designed for PWS—tools that can capture the real-life struggles our loved ones face every day, like rigid thinking, anxiety and depressive symptoms, repetitive questions, temper outbursts, and skin picking.
The PWS Profile was designed specifically around the experiences of people with PWS. It gives researchers another way to measure symptoms that can affect quality of life but may not be captured by measures focused on other aspects of the syndrome.
What Does the PWS Profile Measure?
The PWS Profile assesses eight key areas:
- Rigidity and insistence on sameness
- Aggressive behaviors
- Repetitive questioning and speech
- Compulsive behaviors
- Depression and anxiety
- Hoarding tendencies
- Negative distorted thinking
- Magical distorted thinking
A smaller category also focuses on skin picking, a common behavior in PWS.
The PWS Profile has proven to be a reliable and valid tool, meaning it consistently measures what it’s supposed to and reflects the true experience of individuals with PWS. It works independently of IQ, weight, or family income, making it broadly applicable.
What’s Next? Using the PWS Profile to Improve Care
With the PWS Profile now available, it can be easily used in future clinical trials to evaluate the impact of medications and behavioral interventions not only on hyperphagia but also on the emotional and behavioral problems that are common in PWS. Additionally, the profile can also be used to track the natural history of a wide range of PWS symptoms over time.
This important advancement wouldn’t be possible without the families who participate in the Global PWS Registry. Your contributions provide the data that drive progress and give hope for better treatments ahead.
Together, we’re building a clearer picture of PWS—and with tools like the PWS Profile, we’re closer than ever to treatments that truly make a difference in the lives of our loved ones.
