MEDICAL mix-ups are bringing misery to identical twins.
Sonia and Sara Mortimer, of Kirkheaton, are getting more and more annoyed by the repeated mistakes by local hospitals and health officials.
And now they have demanded an end to the errors.
Sonia (left) and Sara, pictured, have complained that each has had letters about medical tests or appointments sent to the wrong sister.
And when they have made hospital visits, the wrong records have been brought up on computer.
The 22-year-old twins, who were born 10 weeks premature, said they had been told repeatedly there would be no more mistakes.
Sonia said: "It has happened many times. I went for blood tests and they sent a letter back to my sister, and then I got a letter about a hospital appointment that was meant for Sara.
"We have different doctors and different NHS numbers but they still seem to get us mixed up."
Sara said: "It is really getting on my nerves. I have been for tests but the appointment goes to Sonia.
"I have complained to the authorities but despite their assurances it would not happen again, it has."
The sisters are both on a media studies course at the University of Huddersfield.
Both are former pupils of Kirkheaton Primary School and King James's School, Almondbury.
A spokesman for Calderdale and Huddersfield NHS Trust said: "We cannot comment on individual cases due to patient confidentiality.
"We would encourage the patients to contact us directly with their concerns."