The family of a former Adelaide man is facing financial ruin after he collapsed into a coma while holidaying in Mexico.

Ryan Maudlen has spent eight years traveling the globe, but his latest holiday has ended in his family forking out almost $100,000 in medical bills to keep him alive.

He is comatose in a Mexican hospital after collapsing last week when his intestines ruptured, requiring emergency surgery.

The bad turn was a flare up of Crohn’s Disease, an inflammatory bowel disease he has had since he was a teenager.

His family has already paid $100,000 in less than a week, with his father describing the hospital administrators as ‘heartless’.

“They demand it, they demand the money,” Robert Maudlen said.

View photos Ryan Maudlen enjoying some of his journey around the globe. Photo: Supplied. More

Mr Maudlen’s family and friends suspect he did not declare his condition to his travel insurer and his claim has therefore been knocked back.

Supporters have set up a Go Fund Me campaign to raise money to pay his hospital bills.

“I’ll just use whatever funds I can get, if I got nothing left I got nothing left, but at least I still got my son,” Mr Maudlen said.