Adam was working with a lady with Cacophobia - the fear of ugliness or ugly things. While this is a rare phobia it's very distressing for the people that have it. It is also a phobia that is perceived to be a character flaw of the individual rather than a genuine phobia, as it is assumed to be a form of prejudice or shallowness. 

Adam uses a belief change technique to enable the client to see the beauty in others similar in premise to the movie Shallow Hal featuring Jack Black.