Ashley experienced pain and burning in the epigastric region when she lays flat in bed. This condition improves vihen she raises the head of her bed.
She has

Gastroesophageal Reflux Disease (GERD)

Explanation:

"Gastroesophageal Reflux Disease" is a condition in the digestive system that is caused by the backflow of acid coming from the stomach. Such backflow reaches the esophagus, especially when the person is lying in bed. Thus, it is essential to raise the head of the bed to a specific height (at least 6-8 inches). The person should be in an upright position to contradict gravity.

Aside from this, GERD may be prevented by not smoking or drinking acidic drinks like orange juice, not eating before going to bed and exercising.