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- Prader-Willi syndrome (PWS) treatment combines medications, structured nutrition, and therapy to help manage hunger, behavior, and growth.
- Strict food routines and supervision can help prevent overeating and reduce stress around food.
- Consistent daily routines and specialized therapies for behavior and movement can improve quality of life and long-term health.
Prader-Willi syndrome (PWS) is a rare genetic disorder that affects how the brain controls hunger, growth, and behavior. There’s no cure, but treatment combines medical care, nutrition planning, and behavioral support to help manage PWS symptoms and prevent complications.
1. Medications
In PWS, medications are used to manage symptoms rather than treat the condition itself. Most medications are long-term and adjusted based on needs.
Growth Hormone Therapy
Growth hormone (GH) therapy is the most widely used medication and is often started in early childhood. It can help do the following:
- Improve height
- Build muscle
- Reduce body fat
- Support physical development
- Support energy levels
GH therapy is a daily injection that healthcare providers often prescribe into adulthood. Before starting the therapy, providers often screen for sleep apnea and breathing problems, and in some cases, these issues need to be treated first.
GH therapy isn’t recommended for children with PWS who have severe obesity or respiratory issues, as there have been rare reports of sudden death in these groups.
Possible side effects: Headaches, injection site reactions or rashes, joint pain
Sex Hormone Replacement
Low levels of sex hormones are common in people with PWS and can affect puberty, bone strength, and quality of life.
Hormone replacement therapy, such as testosterone for males and estrogen with progesterone for females, is often used to help manage these symptoms. It’s usually a long-term treatment, given as injections or gels for males and pills, patches, or gels for females.
Possible side effects: Acne, itching, rashes, irregular bleeding in females
Medications To Manage Appetite and Weight
No medication can fully control the intense hunger (hyperphagia) seen in PWS, but some may help reduce appetite or food-related behaviors.
Some providers try medications such as topiramate (Topamax) or glucagon-like peptide-1 (GLP-1) receptor agonists, including liraglutide (Saxenda, Victoza) and semaglutide (Ozempic, Wegovy). These are used off-label—meaning for reasons other than what the U.S. Food and Drug Administration approved the medication—and results can vary. A healthcare provider may consider these types of medications when structured nutrition and supervision alone aren’t enough.
Possible side effects: Nausea, vomiting, diarrhea, mood changes, dizziness
Medications for Behavior and Mental Health
PWS can affect mood and behavior. When symptoms like anxiety, mood changes, or behavioral issues become difficult to manage, antidepressants or antipsychotics may be used. A psychiatrist typically prescribes these medications alongside behavioral therapy.
Possible side effects: Drowsiness, weight changes, restlessness
2. Therapies
Therapies are a key part of managing PWS and often start early in life. A team that often includes a developmental pediatrician, endocrinologist, dietitian, and behavioral specialist typically coordinates these treatments.
Physical and Occupational Therapy
Movement and coordination are challenges many children with PWS face early on due to low muscle tone. Physical therapy helps build strength and improve mobility. Occupational therapy focuses on daily activities like dressing, feeding, and fine motor skills like fastening a button or holding utensils.
These therapies are usually ongoing and adjusted over time.
Speech and Language Therapy
If communication is delayed, speech therapy can help build language skills and support social interaction. It may also help with feeding or swallowing.
Behavioral Therapy
Managing food-related behaviors and daily routines is another significant challenge in PWS. Applied behavior analysis (ABA) and cognitive behavioral therapy (CBT) can provide tools to create structure and build coping skills. These approaches work best when caregivers use the same strategies consistently at home.
Skin picking is common and can lead to serious wounds or infection. Strategies like keeping hands busy with fidget items or covering the skin with clothing or light gloves can help.
Mental Health Therapy
Living with PWS often means managing anxiety, mood changes, and stress related to hyperphagia and daily routines. A therapist can help the person with PWS and their family manage these challenges.
3. Lifestyle Changes
Because PWS affects the body and behavior, lifestyle strategies are as important as medical care. Most families implement habits early to keep food securely stored at home and encourage regular physical activity.
Structured Nutrition
Setting clear boundaries around food at home can feel restrictive and difficult to enforce, but it’s one of the most helpful tools families have. Many use locks on refrigerators or pantries. Clear household rules and routines also help keep the person with PWS safe and healthy, while reducing stress.
A registered dietitian familiar with PWS can help determine calorie needs based on age, growth, and whether the child is receiving growth hormone therapy.
Exercise
People with PWS tend to have less muscle mass, so their bodies burn fewer calories at rest. Daily exercise helps build strength, burn more energy, and support overall health over time.
Activities can include walking, swimming, or other structured exercises. Remember that pacing and breaks are important.
Consistent Routines
Predictable routines can help reduce stress and the likelihood of behavioral outbursts.
If plans need to change, giving advance notice and explaining what’s happening can help make transitions easier.
4. Specialty Care
Some people with PWS may need care from specialist providers. For example, a pediatric ophthalmologist can help manage strabismus (crossed eyes). Meanwhile, an orthopedist may also evaluate and treat scoliosis, a sideways curve of the spine. Treatment may include monitoring, bracing, or, in some cases, surgery.
Prognosis and Life Expectancy
People with PWS are living longer than in the past, especially with structured care and early treatment. Life expectancy varies, but many individuals reach adulthood and beyond.
Without proper management, complications related to obesity can shorten life expectancy. Research into new treatments, including options for extreme hunger, is ongoing.
Living With and Managing Prader-Willi Syndrome
PWS requires ongoing care, but families have access to support. Organizations like Prader-Willi Syndrome Association USA offer resources and community.
Working with a care team, using school accommodations, and connecting with others can help manage the challenges of the condition. As individuals with PWS move into adulthood, structured residential programs are another resource to consider.
