My husband has had three incidences of a swollen face, in the last month. First, a lip, then the right side, a couple of days ago, the left side. It's the lower portion more by his jaw line. What could this be? The last two times it only lasted a day. This one is already into the second day. He is a male, 70 yrs old, smoker, and on high blood pressure pills as well as 40 mlgs of lipitor. Thank you for your input/