Lowri Denman recovers after contracting 38 brain parasites in India
After contracting 38 parasitic cysts from a pork tapeworm in India, Lowri Denman has overcome a decade of neurological and psychiatric illness to advocate for others.
A Cardiff woman who contracted 38 brain parasites following a 2007 trip to India has emerged from a decade of severe neurological and psychiatric illness, now working to build awareness for the rare condition she survived. Lowri Denman, 42, spent years battling neurocysticercosis, an infection caused by the larvae of the pork tapeworm that manifests in the central nervous system. Her recovery marks the end of a long, medically complex journey that her consultant described as a once-in-a-career case.
A Delayed Diagnosis
Denman’s ordeal began during a trip through India. For years, the infection remained dormant. It was not until 2010, three years after her return, that the presence of the tapeworm became undeniable when she passed a metre-long parasite.
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Following this discovery, initial stool tests were satisfactory, leading Denman to believe the threat had passed. However, by 2011, she began suffering from intense headaches, which culminated in a tonic-clonic (grand mal) seizure. Scans confirmed the presence of 38 parasitic cysts lodged within her brain. While medical teams initially suspected toxoplasmosis, further investigation into the earlier tapeworm discovery led to a diagnosis of neurocysticercosis.
The Struggle for Stability
The subsequent years were defined by unsuccessful treatment cycles, professional displacement, and a mental health crisis. Denman was treated with a combination of steroids, albendazole, and later, praziquantel. While these medications initially reduced swelling, doctors found that the inflammation frequently returned as she weaned off the drugs. The physical toll was compounded by the side effects of treatments, including chemotherapy-grade medication, which left her exhausted and uncertain of her future.
Her quality of life deteriorated significantly as she lost her independence. According to The Independent, Denman was forced to give up her job and rely on government assistance, unable to even complete the necessary paperwork herself. By 2016, the combination of physical pain and the uncertainty surrounding her prognosis triggered a breakdown in her mental health.
"I was having panic attacks, I thought I was going to die, I think, and then that turned into paranoia, and then the psychosis came out. I wasn’t stable at all, all these thoughts and crazy things were going on in my head."
Lowri Denman, patient, via AOL
Her friend of two decades, Nicola Brown, described witnessing a stark deterioration in Denman’s behavior during her three-month stay in a neuropsychiatric ward, noting that Denman had regressed to a childlike state and expressed deep paranoia about being pursued by law enforcement.
Path to Recovery
By 2017, Denman was discharged from the hospital and began the process of rebuilding her life in Carmarthen before eventually moving back to Cardiff. Dr. Brendan Healy, a consultant in infectious diseases and microbiology, confirmed that Denman’s case was discussed by specialists in both the UK and the US, highlighting how extreme and rare her presentation was. Today, the parasites in her brain have calcified, and she has remained free of seizures since 2017. While she requires ongoing epilepsy medication, she has returned to work and finished an interior design degree.
Looking Ahead
Denman is now channeling her experience into a public awareness project, specifically a 12-part podcast developed with Brown to provide others with information she struggled to find during her own illness. The project, which was shortlisted for 2025’s The Whickers Podcast Pitch Award, seeks to demystify neurocysticercosis.
Key Milestones
- 2007: Trip to India, during which infection was likely contracted.
- 2010: Discovery and passing of a metre-long tapeworm; initial health checks return clear.
- 2011: First tonic-clonic seizure; formal diagnosis of 38 brain parasites.
- 2016: Admission to a neuropsychiatric ward following severe physical and mental decline.
- 2017: Release from hospital and final seizure; start of long-term recovery and calcification of cysts.
- 2025: Podcast project shortlisted for The Whickers Podcast Pitch Award.
As Denman moves into her 40s, she expresses a renewed commitment to health and advocacy. She remains focused on ensuring that her negative experience results in a tangible resource for those facing similar medical uncertainties, noting that she is grateful to be alive and active after losing much of her thirties to the condition.
