Police are concerned for the safety of a woman missing from a hospital in Sydney's east.
Belinda Burcham, also known as Belinda Sheehan, left St Vincent's Hospital in Darlinghurst on Sunday morning.
The 40-year-old hadn't been given medical clearance, and still had a cannula in her arm.
Detective Inspector Paul McDonald says it is unlikely the woman met with foul play, but she no means of support.
"7:30am on a Sunday morning - around that area isn't that bad at that time," he said.
"So we can't say she has met with foul play, but obviously just concerned about her welfare and safety at this stage.
"She had no money or bank credit cards or anything with her. She has no phone. So ostensibly she's out there on her own."
Police have carried out a search of the area, and are concerned for her welfare because she still needs medical treatment.
Her family has launched a campaign on Facebook, describing the 40-year-old as a beautiful and much loved mother, daughter, sister, aunt, cousin and friend.
Her mother, Elaine Talbert, says the disappearance is out of character.
"When we found out that she had walked out without staff knowing at 6:30 on Sunday morning that was a horrible thing to hear," she said.
"We love her dearly and want her back."
Her father, Paul Talbert, says she never would have gone four days without getting in touch with her family.
"I just can't understand what's going through her mind because she loves her children dearly and she was going to see them the day before yesterday," he said.
"She would have seen them today. I just believe that normally she would come home to see the kids."
Ms Burcham has long blonde hair and was last seen wearing a pink jacket and black pants with a floral print.
She is about 160cm tall.
Anyone with information should contact Rose bay Police or Crime Stoppers on 1800 333 000.