Janet was last seen at Watford General Hospital today.
She is aged in her 60s and is described as white, with short white hair. She is believed to be wearing trousers, and a white t-shirt and black shoes.
She walks with a wheeled walker. Officers are keen to trace her as she is believed to be vulnerable.
If you have seen him please call 999 immediately. Or if you have information about where he has been call 101 or report online at herts.police.uk/report.
