An 86-year-old farmer from Trecastle in Powys says he had no idea a parasite-related condition had been developing for years until he was struck by what he described as the most intense pain of his life. Meredydd Jones was found to have slow-growing cysts caused by a tapeworm, turning a hidden problem into a sudden health emergency.

The case stands out because the condition appears to have progressed quietly over a long period. With no clear warning signs, Jones said he did not realize anything was wrong until the severe pain began, showing how some parasitic illnesses can remain undetected for years.

The report centers on the shock of discovering that a tapeworm-linked problem had been present without obvious symptoms. Slow-growing cysts can develop gradually, which helps explain why a person may feel normal for a long time before the condition becomes impossible to ignore.

Jones's experience has drawn attention to the way an unseen infection can surface dramatically after years of silence. His story highlights the gap that can exist between an underlying condition and the moment it finally causes unmistakable pain.