A family vacation took a tragic turn after a 5-year-old Colorado boy who initially complained of a stomach ache died just days later from an exceptionally rare medical condition. Justin Vu, described by his family as a healthy and active child, became seriously ill while visiting Oregon and was later diagnosed with systemic capillary leak syndrome, a disorder that affects only a small number of people worldwide.
His family is now sharing his story to raise awareness of the rare disease and its symptoms.
Illness
Justin Vu, 5, from Denver, Colorado, was vacationing in Oregon with his mother, Terese Peden, and his siblings when he suddenly became sick.
According to his father, Viet Vu, Justin had been healthy throughout the trip until the fourth night of the vacation, when he complained that his stomach hurt before going to bed.
Later that evening, he began vomiting, prompting his family to seek emergency medical care the following day.
Treatment
Doctors initially believed Justin’s symptoms could be caused by appendicitis or an infection. He was later transferred to a children’s hospital in Portland for specialized care.
Medical teams noted inflammation and fluid buildup in his body, findings that can be associated with severe infections.
To cover several possible bacterial or atypical infections, doctors treated Justin with four antimicrobial medications while continuing to investigate the cause of his illness.
His father traveled from Denver to Oregon after learning his son’s condition had become critical.
Diagnosis
Despite intensive medical care, Justin’s condition continued to worsen.
He died on July 8, five days after he was first hospitalized, with his family by his side.
Doctors later determined that Justin had systemic capillary leak syndrome, also known as Clarkson’s disease or Clarkson’s syndrome.
The condition causes fluid to leak from tiny blood vessels called capillaries into surrounding tissues. This can lead to a rapid drop in blood pressure and other life-threatening complications.
Condition
Systemic capillary leak syndrome is considered extremely rare.
According to the National Organization for Rare Disorders (NORD), fewer than 500 cases have been reported worldwide since the 1960s.
The condition is most often diagnosed in otherwise healthy middle-aged adults and is especially uncommon in children.
| Fact | Details |
|---|---|
| Disease | Systemic capillary leak syndrome |
| Also Known As | Clarkson’s disease |
| Reported Cases | Fewer than 500 worldwide |
| Common Age Group | Mostly middle-aged adults |
| Occurrence in Children | Extremely rare |
Symptoms
Early symptoms of systemic capillary leak syndrome can resemble those of more common illnesses, making diagnosis difficult.
Possible symptoms include:
- Nausea.
- Abdominal pain.
- Vomiting.
- Headaches.
- Lightheadedness.
- Coughing.
- Nasal congestion.
- Swelling in the arms or other areas.
Patients may also develop an elevated white blood cell count, which can make the illness appear similar to an infection.
Medical experts say the exact cause of the syndrome remains unknown, and there is currently no known hereditary link.
Family
Viet Vu, a radiologic technologist, said he had never heard of the disease before his son’s diagnosis.
He described Justin as a kind and energetic child who loved meeting new people, playing T-ball, and making others laugh.
The family hopes that sharing Justin’s story will help increase awareness of the rare condition, even though many questions about the illness remain unanswered.
Justin Vu’s case highlights how some rare medical conditions can initially resemble common illnesses, making diagnosis especially challenging. While systemic capillary leak syndrome remains exceptionally uncommon, his family’s experience has drawn attention to the importance of continued research and awareness of rare diseases that can develop rapidly and unexpectedly.


















