Former Headless Chickens frontman Grant Fell is in hospice care after it was discovered his cancer had returned.

The former Headless Chickens manager and bassist, who had just overcome a two-year battle with cancer, is in hospice care.

Grant Fell's wife and caregiver Rachael Churchward said he was taken in on Monday after it was discovered the cancer had returned.

"He's on his way, he's on his way," Churchward said. Doctors were unsure how much time he had left.

DARRYL WARD Grant Fell and Rachael Churchward on their wedding day in 1991.

New Zealand rock band Headless Chickens formed in the 1980s and went on to star lead singer Fiona McDonald. They recorded three albums: Stunt Clown (1988), Body Blow (1991), and Greedy (1997). They won five New Zealand Music Awards.

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Fell was diagnosed wth glioblastoma – a cancerous brain tumour – in 2015. In September 2017, his doctors told him the tumour had gone.

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A simple kidney infection later that month took away Fell's new-found freedom.

He was given antibiotics, which nullified the effects of his epilepsy medication.

"They underdosed him for weeks and we didn't know," Churchward said.

"He had a massive seizure that just about took him out."

Fell suffered 60 seizures over five days - some lasting up to an hour.

The seizures took a major toll on his immune system, which was unable to fight off cancer growth.

"They're in there and they just wait, and the minute the body is down, which the seizures did to him, they just got in there and went to town," Churchward said.

"It's unbelievable. I'm just walking around in a daze. It doesn't feel real."

Churchward said he was in a peaceful condition at the hospice, and was being kept sedated for pain and seizures.