1 If your blood pressure is borderline high -- systolic blood pressure between 120 and 139 or diastolic blood pressure of 80 to 89 -- check it at least every year or more often as your doctor suggests. 2  Depending on whether or not you have other medical issues, this number might be considered too high.
An ear infection certainly can cause pain in your jaw. In addition, the reverse is true. A toothache can cause pain in your jaw and ear. This includes a cavity, tooth infection, or new teeth coming in (such as your wisdom teeth). You should have your doctor check you out for an ear infection.
When I eat or drink something sour, or sweet and sour -- usually something with vinegar or lemon juice in it -- I have acute pain under my ear and extending to the back of my jaw. For example, I have learned to avoid pickle relish and sour candies, and have to be careful with lemonade.