“There are a number of things that may contribute to or cause gastroparesis. In the majority of people with gastroparesis, the cause is unknown and is termed “idiopathic.” This is the most common subset of gastroparesis. The term idiopathic simply means that there is no known cause of the disease. An average of 30% to 50% of patients with gastroparesis have a diagnosis of idiopathic gastroparesis. “.

Campbell County Health  https://www.cchwyo.org