I have a Dr. appointment on Tuesday to ensure that my Diabetes meds aren t affecting kidney functions (my urine as been darker than normal this last week). Also, this week, I ve experienced irregular heartbeat when standing and exerting. Attendant with the accelerated heart rate have been pressure (especially from the neck up), dizziness, labored breathing, and some pain in the hand/wrist areas of both hands. I know there are several possible causes, such as irregular heart disorder, and thought I d stop by to check some of the symptoms out. At rest, none of the symptoms manifest themselves, for the most part.