Debbie Missud, 26, says you are a 'glass child' when you are the healthy or well sibling of chronically ill children, so often feel invisible to your parents.

She said she was a 'glass child' because her sibling suffered with mental health issues such as bipolar and OCD.

She explained he took up a disproportionate amount of her parents' time which led her to be hyper-independent.

Debbie debunked the myth that children of chronically ill parents can be glass children and also said that it isn't a mental health condition in itself.

As the well sibling, she developed into a chronic people pleaser and felt an overwhelming pressure to be problem-free and perfect.

Debbie started suffering from anxiety aged 22 and went to therapy where she unpacked her glass child syndrome.

She advises well children to seek therapy and to talk to their parents - if they can - about their issues and to set clear boundaries.