Dr. Beth, I am a 30 year old single woman in graduate school and I also work part-time. Lately I have been having a problem I never had before.  I have started to feel nervous and anxious about things that never made me anxious before:  taking tests, writing papers, and irrational worry about developing cancer, which I have no reason to suspect. I have also started having what I can only describe as “panic attacks” for no reason when I am driving on the highway. I have never suffered from anything like this before.  Do you think this is a physical or a psychological problem and what do I do to deal with it?