West Yorkshire Police are asking for public help to find Hayley James, who was last seen leaving St James's Hospital in Leeds.
Hayley, 35, has been referred to as a high-risk missing person by officers and is described as being 5ft 2in tall with a thin build and shoulder-length black curly hair.
She is also believed to be wearing a grey hoodie and black leggings, but no shoes.
Hayley has links to Lincoln Green and Morley and anybody with any information on her whereabouts, should ring 101, quoting log 1893 21st.
According to the Missing People charity, somebody is reported missing every 90 seconds in the UK, equating to a total of 170,000 people.
Of that number, almost 98,000 are adults and more than 70,000 are children.
The charity also states that 75 per cent of adults are found within the first 24 hours of being reported missing and 85 per cent are found within two days, while five per cent are not found in the first week.
For children, the respective figures are 80 per cent, 90 per cent and two per cent.
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