One year ago, Toby’s wife died. For the past six months, Toby has been acting out of character. Despite being physically in good health, he has not left the house for several weeks and has asked his parents to shop for groceries for him. Whenever his parents visit, they notice that he has not showered for days and is often wearing the same clothes. He lost his job because of extended absences and his friends are concerned as Toby is no longer responding to their text messages or telephone calls. He has also shown a lack of interest in physical activity despite previously completing many marathons.