constipation, chronic
"In the first week I took Amitiza, I thought it was going to be a miracle answer to my chronic constipation.   But I had a side effect of severe headaches almost every day....and sometimes all day long.  Since I already have migraines, I blamed it on them getting worse.....even though the symptoms were different.  First the headache would start, and within 5-10 minutes a gush of uncontrollable diarrhea.   I kept blaming it all on migraines and seeking treatment for them.  Finally, because of the expense of this one medication and having to take so many more, I had to stop taking Amitiza.  Within just a few days, the headaches with diarrhea stopped.  This is an excellent product if you don't have the side effects."