If they haven't you might suggest that they do so. If the problem is more serious, you can refer them to the University of Oregon Counseling and Testing Center where counseling services are provided free of charge to students of the university. The phone number for their office is 346-3227. Also available to students is the U of O Crisis Center, which can be reached at 346-4488. Do not try to handle a situation which you do not feel prepared to deal with.
Every student has access to professionals at no charge.
If you would like an opinion on how to help a student, call the Counseling Center and ask for their advice. As a teacher you will encounter diversity of every kind. It is important that you recognize and take this diversity in account when planning a class. You may want to consider, for example, how race, ethnicity, gender, sexual orientation, age, academic abilities and disabilities may affect your students' success with the course work. A principle to begin with is to be sensitive, thoughtful, and trust your instincts.