A mother has shared a heartbreaking video of her daughter begging to die after a bug bite as a child has left her in constant pain.

Theresa Keep filmed her daughter Kirsty lying in a hospital bed breathing in gas and air as she groaned in agony from an unknown illness.

The 23-year-old was bitten by a bug in her back garden when she was just 12 and has suffered from chronic pain ever since.

Her condition has worsened recently and Kirsty, from Maidstone, Kent, has been in and out of hospital four times just in the last month.

Theresa said Kirsty begs to be taken to a Swiss suicide clinic every day.

Theresa believes it was a tick that bit her, but medics are unconvinced.

Medical experts have said that she has Lupus for the last seven years, but recently a doctor at Guy's Hospital said this is not the case.

Theresa believes she may have Lyme Disease but tests in the UK came back negative, so her family and friends are resorting to alternative tests.

The family believe a treatment centre in Florida, US called the Sponaugle Wellness Institute may be the only answer.

In a moving post on Go Fund Me, the single mother-of-three said: "I really feel time is running out.

"I hate to ask for this but I don't have a choice. Thank you all for what you have already done, love to you all."