hyperprolactinemia
"I have been taking dostinex/cabergoline for 14 years.  The main constant side effect is headaches. It feels like an ice pick is stabbing me in my head for a couple of seconds and then it goes away just as quickly as it  started. It only happens maybe a couple times a month.  I also find I get tired more easily and sometimes need to rest during the day.  in addition, my vision has worsened.  I stopped the medicine for about a year now and I'm getting dizzy quite often lately and my vision is worse.  I fear my tumor has grown and need to see my endocrinologist again.  God bless all"