Psychological means mental or emotional rather than physical. After a shock, your problems, and even your physical pain, stem from psychological sources rather than any bodily ailment.
The word psychological is used to describe things that are primarily mental or emotional, but it can also be used when referring to the field of psychology. You might be interested in studying the psychological issues of teen and childhood in college. Watch out if someone uses psychological warfare on you. He or she uses your own emotions to attack you as when someone tries to guilt you into doing something.