Rising rates of incivility in the college classroom can generate stress for both faculty and students. However, incivility can take multiple forms, have different causes and require different management techniques. In some cases disruptive behavior is the result of student faculty interactions, and can be ameliorated by improved communication or behavioral strategies. In other cases the behavior is symptomatic of more serious forms of mental illness. This paper will focus on helping faculty to distinguish incivility from mental illness, and to develop effective strategies for coping with disturbing behavior.