My 10 year old son has developed a constant stomachache since we changed his medication this summer. He had been on Risperdal for 8 years and we switched to Abilify. Now anything he eats goes right thru him. His stomach hurts all the time and he has lost 10 pounds in 6 weeks. His blood work came back fairly normal. His cholesterol runs a little high for some reason. I adopted him so I don t know his family history. What could this be?