Dealing with Restlessness and RLS Symptoms

I have a complicated history that involves a lot of restlessness. However, several neurologists have told me that I do not have restless leg syndrome. Whatever it is I have, they told me, it's not RLS. In the past 6 months, strangely, the problem has changed. It seems like I now have classic RLS symptoms on top of the restlessness I was already feeling. Is that even possible? I suppose it must be, because it's happening. The regular restlessness is present throughout the day. But at night, shortly after I go to bed, I feel a much more intense restlessness focused in my legs and pelvis. It lasts until about 3:00 a.m. The good news is that I have found an effective treatment for it: potassium citrate. The only problem is that the potassium is very rough on my stomach and I'm not able to take it.