Cynthia, a 31-year-old woman with a history of depression, is seen in the office today for complaints of headaches. She was recently promoted at her job, and this has caused increased stress. She describes the headache as a tightening (viselike) feeling in the temporal and nuchal areas. The pain is bilateral and tends to wax and wane. It started approximately 2 days ago and is still present. What kind of headache is she describing