1. The following article appeared in a magazine:

Hoarding disorder – A ‘new’ mental illness

Most of us are able to throw away the things we don’t need on a daily basis. Approximately 1 in 1000 people, however, suffer from hoarding disorder, defined as ‘a difficulty parting with items and possessions, which leads to severe anxiety and extreme clutter that affects living or work spaces’.

Apart from ‘deviation from ideal mental health’, outline three definitions in the field of mental health. Refer to the article above in your answer.