"I thought I had just knocked my head and it was a scab," he said about the bleeding lump on his head. "It was the size of a bubble wrap bubble and there was no pain. But it just wouldn't heal.

The Persistent Lump Clyde, now 57, first noticed the lump two years after the cricket ball incident. It wasn't painful, but its prominence became a part of his daily life.

During these sessions, direct pressure was applied to the top of his head for between two and seven minutes. Despite hair loss and a burgeoning lump on his head, he continued to practise headspins ...

Breakdancers have been urged to avoid headspinning after a dancer who developed a cone-shaped lump on his head due to "years of extensive headspinning practice” had to have it surgically removed.