Hi, Nancy....

I think you have lost alot of electrolytes with your "problem".
Eyelid twitching can reflect also a fatty acid deficiency. There is even a paper on PubMed from the Basel corp (I had a copy of it on the OBT) that saw
success in a trial of Omega-3's on blepharospasms.

But I think that in your case primarily you should try to to increase your
potassium intake by choosing foods high in that mineral. Cantaloupe is one of the highest and now in season. (1,400 mg/half melon).

Chronic diarrhea also depletes magnesium, which can cause muscle twitching.
But be careful... when you are "upset" this way, mag could set you off again.
So foods high in mag would be gentler.

I, myself, had a spate of traveler's diarrhea this summer, and it was a bit hard to get rid of too. I used metamucil (an old intervention a GI specialist gave me many years ago before my son was born). This soaks up the toxins into the fiber and allows you to pass them. I also discovered that using Lactaid milk helped alot. I am not typically lactose intolerant, but with age, and perhaps infection, the inability of digest lactose complicates recovery from diarrhea.
(small children often have this effect and my son did too).

I also used the new yogurt Activia... and found it helpful.