They also suffered from folie a deux syndrome - translated from French as madness created between two people.

BBC: Mental illness 'affected' death accused Angela Pearson

Prof Eastman explained folie a deux depended on one person being the primary individual, in this case Eileen Pearson, with the other person being in the shadow of them.

BBC: Mental illness 'affected' death accused Angela Pearson

The defence say Miss Pearson and her mother suffered from a syndrome called folie a deux which meant the older woman was the dominant figure in the relationship and Miss Pearson therefore had a reduced capacity to appreciate the risk to her mother's health or the conditions they lived in.

BBC: Angela Pearson had 'no idea' mother would die