gerd
"This seemed to control my stomach discomfort. I don’t have typical reflux symptoms, but have been on PPIs (Nexium)for 5+ years because it helps control the pain in my stomach. I switched to Dexilant because I was still uncomfortable on Nexium. 

Immediate side effects were mostly cramping. After being on Dexilant  for about 6 weeks, I started feeling brief, strange sensations all over my body. It felt like pin pricks, or a zing here or there in my arms, hands, legs, face, or scalp. Two weeks later those sensations have intensified. Instead of lasting a few seconds and going away or a while, numerous sensations occur again and again. I am scratching even though it doesn’t really itch. I stopped taking the drug as a result."