Researchers at Alder Hey Children's NHS Foundation Trust in Liverpool have documented a surge in ketamine-induced uropathy among adolescents. The study, which analyzed the first 60 patients at the UK's inaugural specialist clinic, found that children as young as 13 are suffering significant bladder and kidney damage.
The May 2025 launch of the UK's first KIU clinic
The Alder Hey Children's NHS Foundation Trust opened its specialized ketamine-induced uropathy (KIU) clinic in May 2025 to address a growing number of young patients preesnting with severe urinary symptoms. As reported by the clinic, the condition—often referred to as "ketamine bladder"—causes debilitating damage to the bladder wall, urinary tubes, and kidneys .
The findings, published in the Archives of Disease in Childhood, highlihgt a pattern of use that begins early in adolescence. According to the study, the average age of the first 60 patients was 14, with some individuals beginning ketamine use at just 13 years old. most patients had been using the drug for one to two years before being referred to the specialists in Liverpool.
Trauma and neurodivergence among the first 60 patients
The demographic profile of the clinic's patients suggests that ketamine use is deeply intertwined with social and psychological vulnerabilities. The study found that approximately two-thirds of the patients were girls,and a similar proportion resided in the most deprived areas of the UK.
Beyond socioeconomic factors, the research identified significant mental health and developmental markers. Specifically, 72 per cent of the patients had experienced childhood emotional trauma, and 16 individuals were identified as having autism or ADHD. Furthermore, one in five patients had a history within the care system. These statistics suggest that the clinic is treating a population that is already navigating extreme systemic and personal challenges.
The threat of irreversible fibrosis and dialysis
The clinical consequences of non-prescribed ketamine use are potentially life-altering. Ms. Harriet Corbett, a consultant paediatric urologist at Alder Hey, warned that the drug can cause ulceration and fibrosis within the bladder wall. These physical changes are often irreversible, leading to chronic pain and loss of bladder control.
In the most extreme cases, the damage to the urinary system is so severe that patients may require major surgery or even lifelong dialysis. Professor Rachel Isba, a consultant in paediatric public healh medicine at Alder Hey and professor emerita at Lancaster University's Medical School, noted that the clinic's non-judgmental approach aims to provide a safe space for these young people to seek help before such permanent damage occurs.
The unidentified substances used by 50 per cent of patients
While the study provides a clear demographic snapshot, several critical areas remain unaddressed. The report notes that half of the patients were using other drugs alongside ketamine, and 48 per cent were using vapes, but it does not specify which other substances are most prevalent in this cohort. Additionally, while the link between childhood trauma and ketamine use is evident in the 72 per cent figure , the study does not detail the specific nature of these traumas or how they directly trigger the onset of addiction. There is also a lack of information regarding the specific "deprived areas" involved, which prevents a more localized public health response.
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