Just like postpartum depression, stay-at-home-mum depression can be triggered by external factors, major life changes or even a shift in hormones. The leading cause, however, is stress.
"Stress exacerbates any condition, mental health or otherwise,” Melinda Paige, a professor of clinical mental health counselling, told Glamour.
The life of a stay-at-home is rife with triggers.
As Powell suggests, isolation, loss of purpose or identity, and lack of social interaction with fellow adults, can all play a role in the development of depression.
The complication with mother's who choose to stay home, though, is that they are often overlooked because not having to go to work everyday is viewed as a privilege.
In short, a woman or man is considered lucky.
This often makes it uncomfortable to come forward and ask for help.
Powell is being praised for putting a name to the phenomenon and helping legitimise the issue.
If you, or anyone you know, is seeking help contact Beyond Blue on 1300 22 4636.