If you think this week's episode of Parenthood was a tearjerker, you may need to purchase an extra box of Kleenex for "Qualities and Difficulties."

Next Tuesday night, Kristina and Adam will sit Max down and attempt to explain his disease to him. As you might expect, and as the preview below depicts, the kid has many questions. Also on tap:

• Sarah's relationship with Mark Cyr gets going again.
• Crosby attempts to make amends with Jasmine.
• Julia and Joel prepare their eighth anniversary. 

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.