Wilhelm Foundation

Wilhelm Foundation Wilhelm Foundation's goal is for all undiagnosed children to be diagnosed. Specialists from the whole world are invited to the congresses. Thank you!

Wilhelm Foundations goal is that all children with undiagnosed diseases shall get a diagnosis! To solve this Wilhelm Foundation has arranged nine International Congresses of Undiagnosed Diseases and is currently planning the tenth one which will be held in Italy. The Congresses are in collaboration with Dr Gahl, NIH in USA, Wilhelm Foundation and a specialist from the country where the congress is

held. Wilhelm Foundation is co-founder to Undiagnosed Diseases Network International (UDNI). The UDNI is part of Wilhelm Foundations dream since this is where the specialists from the whole world can collaborate to solve the undiagnosed diseases, improve diagnostic methods and develop medicines for the new diseases they identify. One mission is also to raise awareness about the undiagnosed diaseases

Wilhelm Foundation was founded and is driven by parents Mikk and Helene Cederroth. Their three youngest children died of an undiagnosed disease, Wilhelm died 16 years old, little Emma died 6 years old (one year after Wilhelm’s passing) and after another two years Hugo died 10 years old. Mikk and Helene are now doing all they can to help other families who have children with undiagnosed diseases. In Sweden Wilhelm Foundation is called Willefonden. Wilhelm Foundation/Willefonden are members in; Undiagnosed Diseases Network International UDNI, Rare Diseases International, EURODIS Rare Disease Europe, NORD National Organization for Rare Disorders, Observer member of UN’s NGO Committee for rare diseases, ICORD and Swedish National Association of Rare Diseases. You can start fundraising here on Facebook by using your Facebook account choosing Willefonden (the Swedish name of the foundation) select your total and why you want people to donate and then share it on your time line. You can give a donation to Wilhelm Foundation on our page by clicking on the “donate” button at the top of the page.

💙 Hope. Answers. Action.At Wilhelm Foundation, we work every day to end the diagnostic odyssey for People Living with Un...
14/01/2026

💙 Hope. Answers. Action.

At Wilhelm Foundation, we work every day to end the diagnostic odyssey for People Living with Undiagnosed Diseases (PLWUD)—children and adults who are still waiting for answers.

Founded from lived experience and loss, our mission is simple but urgent: no family should be left without a diagnosis, support, or hope. Through global collaboration, science, and advocacy, we bring together clinicians, researchers, data scientists, and families to push diagnostics forward—especially where resources are limited.

From pioneering the Undiagnosed Hackathon, to building international networks and amplifying patient voices, we believe that together we can solve what cannot be solved alone.

📖 Read more about why the Wilhelm Foundation was founded—and about the Undiagnosed Hackathon—in RARE Revolution Magazine. Read here: https://lnkd.in/ebt7cJfq

Because a diagnosis is more than a name—it’s understanding, care, and a future.

🌍 Learn more. Join us. Be part of the change.

UDNI Rare Diseases International RARE Revolution Magazine

Following profound loss, Helene and Mikk Cederroth turned their grief into global action. Founding the Wilhelm Foundation, they have provided support and hope for undiagnosed families for over 25 years. With radical thinking they have fostered a community of global collaboration in the ongoing search for answers and recognition for those with undiagnosed diseases worldwide. Read here: https://bit.ly/Undiagnosed-TheWilhelmFoundation


Wilhelm Foundation

Holiday Season Greetings from Wilhelm FoundationAs the year comes to a close, we extend our heartfelt gratitude to all w...
26/12/2025

Holiday Season Greetings from Wilhelm Foundation

As the year comes to a close, we extend our heartfelt gratitude to all who walk alongside us - to People Living with Undiagnosed Diseases (PLWUD) and their families, to our dedicated volounteers, advisory council, researchers and clinicians, to our generous sponsors and donors, and to all collaborators and contributors who make this work possible.

Your commitment, expertise, courage, and trust continue to drive progress for those still searching for answers. Together, we are building hope, advancing knowledge, and shortening the diagnostic odyssey—for families and persons living with undiagnosed diseases by global collaboration.

We wish you and your loved ones a peaceful holiday season filled with warmth, reflection, and renewed strength for the year ahead.

Thank you all!
Together we can make a difference!

Wilhelm Foundation - the Undiagnosed


19/12/2025

LUCKA 19

”Change how you see, see how you change”.- Rick Guidotti, Poditive Exposure

Fotoprojektet ODIAGNOSTISERADE The UNDIAGNOSED initiative är ett samarbete mellan den välrenommerade amerikanska fotografen Rick Guidotti, Positive Exposure och Wilhelm Foundation. Det är en ära att ta presentera the UNDIAGNOSED initiative, för att visa mångfalden och det vackra hos var och en av barnen, ungdomarna och vuxna med odiagnostiserade sjukdomar. Målet med projektet ar att ge de odiagnostiserade, ytterligare en chans till en diagnos genom att visa upp fotografier på en fotoutställning på Wilhelm Foundations världskongresser (International Conference on Rare and Undiagnosed Diseases). Fotoprojektet hjälper även till att sprida att det finns odiagnostiserade sjukdomarna överallt i världen. Läs mer om UNDIAGNOSED Initiative på vår hemsida.

Tillsammans kan vi göra skillnad, hjälp Willefonden rädda liv!

Stöd Wilhelm Foundation med en gäva, Swisha 9005448

Foto: Rick Guidotti, Positive Exposure

05/12/2025

LUCKA 5

“Jag viste hela tiden att det var nått som var fel, att han inte bara var blyg”

— mamma till tonårs pojke som fått orsaksdiagnos via Klinisk Genetik i samarbete med Wilhelm Foundation

Wilhelm Foundation anser att alla barn med odiagnostiserade sjukdomar bör utredas med helgenomsekvensering (WGS). Idag vet vi att helgenomsekvensering kan fastställa cirka 40 % av de odiagnostiserade sjukdomarna, vilket innebär att 40 % av barnen som genomgår en WGS får en diagnos! Vi uppmanar alltid föräldrar till barn utan diagnos att be om en remiss till klinisk genetik för en helgenomsekvensering. Om en genetisk utredning har gjorts för några år sedan, är det definitivt dags att göra om den. Genetiken och metoderna för genetiska utredningar har utvecklats avsevärt under de senaste åren och fortsätter att förbättras. Varje ny genetisk utredning kan vara en möjlighet att få en diagnos för barnet. Be barnets läkare att skriva en remiss till klinisk genetik på ett av Sveriges sju universitetssjukhus; genetikmottagningarna kan vara kopplade till CSD (Centrum för Sällsynta Diagnoser).

Även om gensekvensering är ett bra redskap och det är där den stora utvecklingen sker, vi vill även poängtera att inte alla diagnoser ställs av genetikerna utan det behövs ibland även kompetents från andra discipliner (t.ex. sjukgymnaster, ortopeder, kardiologer, metabolläkare) för att kunna ställa diagnos. Så att de tillsammans med genetikernas kan ställa en genetisk diagnos.

Tillsammans kan vi göra skillnad, hjälp Wilhelm Foundation att rädda liv.

Stöd Wilhelm Foundation med en gåva, Swish 9005448

Foto: Rick Guidotti, Positive Exposure

**

✨ Only one sleep left until the Undiagnosed Hackathon 2025 😊THE UNDIAGNOSED INITIATIVE PHOTO EXHIBITIONHosted by Wilhelm...
20/09/2025

✨ Only one sleep left until the Undiagnosed Hackathon 2025 😊

THE UNDIAGNOSED INITIATIVE
PHOTO EXHIBITION

Hosted by Wilhelm Foundation, Positive Exposure and Mayo Clinic Dolores Jean Lavins Center for Humanities in Medicine and Mayo Clinic Center for Individualized Medicine.

The Undiagnosed Initiative - Photo Exhibition is a collaboration between renowned photographer Rick Guidotti, Positive Exposure and Wilhelm Foundation.

This exhibit is held in conjunction with the , in collaboration with Mayo Clinic and the Center for Individualized Medicine in Rochester, MN September 21-23, 2025.

The Undiagnosed Hackathon is a convergence of a global community of experts—clinicians, bioinformaticians, molecular biologists, scientists, developers, Al specialists, and more—as they come together to tackle the challenges faced by People Living With Undiagnosed Diseases .

Through the lens of photography, we invite you to explore the diversity and beauty of PLWUD, celebrating their unique stories and the resilience of the human spirit.

Rare Diseases International Rare Disease Ghana Initiative Rare Disease Ghana Initiative Undiagnosed Diseases Network FoundationEURORDIS-Rare Diseases Europe National Organization for Rare Disorders, Inc. (NORD) UDNI

What is an undiagnosed disease?That is the theme that Fråga Doktorn (Ask the Doctor), Swedish Television will highlight ...
14/09/2025

What is an undiagnosed disease?

That is the theme that Fråga Doktorn (Ask the Doctor), Swedish Television will highlight in two upcoming episodes – starting September 15.

In the first episode, we are invited into the home of Myra, her mom Angelica, and dad Fredrik – a family in the Wilhelm Foundation Undiagnosed Community. 💙

👉 Don’t miss this important program that sheds light on the everyday life of children and families living with an undiagnosed disease – and what it’s like to be a parent of a child with a condition that has not yet been discovered by medical science.

💙 Together we can make a difference. Join us!

Please share this post to help us spread awareness about undiagnosed diseases! 🙏🏻

📢We will later have the opportunity to share the section with English subtitles.


UDNI EURORDIS-Rare Diseases Europe National Organization for Rare Disorders, Inc. (NORD)

📸 Photo: Myra with her dad Fredrik at Wilhelm Foundation’s Family Camp 2025.

01/09/2025

Every summer, something truly special happens at Valjeviken. 💙

Families arrive – some for the very first time, others returning – with children who live every day with an undiagnosed disease.
They come with hope, nerves, and a quiet longing to be seen.

For five days, the world shifts. Something happens – something quiet yet powerful:
🤝 Friendships are formed
💬 A mother whispers: “For once, we don’t have to explain.”
💨 For many, it’s the first time in years they can finally exhale.

The camp is designed to be inclusive for all participants, regardless of disability.
This is what Wilhelm Foundation’s camp is all about:
✨ Belonging
✨ Understanding
✨ A break from the loneliness that undiagnosed diseases often bring.

Here, every child belongs. Every family matters. No one is left behind. 💙

👉 Do you have a child with an undiagnosed disease and want to be part of this?

Join the Wilhelm Foundation’s Undiagnosed Community on Facebook. This is where the journey begins. 🌍💫


UDNI Rare Disease Ghana Initiative Rare Diseases International EURORDIS-Rare Diseases Europe National Organization for Rare Disorders, Inc. (NORD)

01/09/2025

🌟 Wilhelm Foundation Family Camp – “Leave no one behind” 🌟

Every summer, something special happens at Valjeviken. 💙

Families arrive – some for the first time, others returning – with children who live every day with an undiagnosed illness.
They come with hope, nervousness, and a longing to be seen.

Over five days, the world changes. Something happens – something quiet but powerful:
🤝 Friendships are formed
💬 A mother whispers: “For once, we don't have to explain.”
💨 For many, it is the first time in years that they can breathe easy.

The camp is designed to be inclusive for all participants, regardless of disability.

This is what the Wilhelm Foundation's camp is all about:
✨ Togetherness
✨ Understanding
✨ A break from the loneliness that undiagnosed illnesses often bring.

All children belong here. All families are important. No one is left out. 💙

👉 Do you have a child with an Undiagnosed Disease and want to be part of this?

Join the Wilhelm Foundation's Undiagnosed Community on Facebook.

This is where the journey begins. 🌍💫


UDNI Rare Disease Ghana Initiative Rare Diseases International EURORDIS-Rare Diseases Europe National Organization for Rare Disorders, Inc. (NORD)

✨ Imagine living with symptoms no one can explain. That’s the reality for 350 million People Living With Undiagnosed Dis...
23/08/2025

✨ Imagine living with symptoms no one can explain.

That’s the reality for 350 million People Living With Undiagnosed Diseases (PLWUD) worldwide.

At the Wilhelm Foundation, we believe no one should remain undiagnosed—no matter how rare or complex the condition. While genome sequencing brings answers to some, too many are still left searching.

That’s why we bring together scientists, doctors, and advocates through the Undiagnosed Hackathon—to bring hope, diagnoses, and healing. 💙

Together, through innovation and compassion, we can change lives.

💙 Watch the film from Wilhelm Foundation’s Family Camp – a place filled with hope, connection, and strength for families living with undiagnosed diseases.

https://youtu.be/APuJtBWuZ5Q


UDNI Rare Disease Ghana Initiative Rare Diseases International EURORDIS-Rare Diseases Europe National Organization for Rare Disorders, Inc. (NORD)

Join us at the Wilhelm Foundation’s Family Camp—a place of hope, connection, and strength for families living with undiagnosed diseases. 💙✨ Imagine living w...

Undiagnosed Day is not just a day. It’s a movement.A movement driven by love, hope, and the determination to give answer...
04/08/2025

Undiagnosed Day is not just a day. It’s a movement.

A movement driven by love, hope, and the determination to give answers to the 350 millions of people around the world still living in the shadows of medicine — those whose diseases remain unnamed and undiagnosed.

Each year, on April 29, the global community comes together to shine a light on the challenges faced by People Living with Undiagnosed Diseases (PLWUDs). But our work doesn’t stop there.

At the Wilhelm Foundation, every day is Undiagnosed Day — because every family deserves answers.
We are proud of the growing global momentum and deeply moved by the incredible support and solidarity across borders.

As we look ahead to Undiagnosed Day 2026, we remain committed to turning this movement into lasting change — ensuring visibility, equity, and action for those who have waited too long.

Join us. Make the pledge. Spread the word. Share a story.
Because this isn’t just a day. It’s a movement.

Thank you to everyone who made the Global Undiagnosed Day 2025 such a success!

Your voices, your stories, and your dedication are changing lives.

Helene & Mikk Cederroth
Founders Wilhelm Foundation

https://youtu.be/nbwvX-IaLuc

Rare Disease Ghana Initiative Rare Diseases International UDNI U.R. Our Hope EURORDIS-Rare Diseases Europe National Organization for Rare Disorders, Inc. (NORD) Rare Disease Ghana Initiative

Undiagnosed Day is not just a day. It’s a movement.A movement driven by love, hope, and the determination to give answers to the 350 millions of people aroun...

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Our Story

Wilhelm Foundations goal is that all children with undiagnosed diseases shall get a diagnosis!

To solve this Wilhelm Foundation has arranged eight International Congresses of Undiagnosed Diseases and is currently planning the ninth one which will be held at Mayo Clinic, Rochester USA. The Congresses are in collaboration with Dr Gahl, NIH in USA and a specialist from the country where the congress is held. Specialists from the whole world are invited to the congresses. An Undiagnosed Diseases Network International (UDNI) was formed at the first and second congress. The UDNI is part of Wilhelm Foundations dream since this is where the specialists from the whole world can collaborate to solve the undiagnosed diseases, improve diagnostic methods and develop medicines for the new diseases they identify. The photograph at the top of the page is from Wilhelm Foundations eight International Congress in Nijmegen, Netherlands.

There are children with undiagnosed diseases worldwide! Out of 10,000 children between 5-6 are affected. That means approximately 50.000 children in Europe and 38.000 in USA are affected every year by mysterious diseases, that are yet to be discovered by medical science.