Transcutaneous Electrical Acustimulation (TEA) for Gastroparesis

Inclusion Criteria: * At least a 3-month history of diabetic gastroparesis symptoms on an on-going basis; at least one severe gastroparetic symptom or two moderate gastroparetic symptoms (e.g. vomiting, nausea, early satiety, bloating, or epigastric or abdominal pain) during the screening. * Documented delayed gastric emptying within past 3 years * Stable concomitant medications, defined as no changes in regimen for at least 2 weeks prior to the experiment (daily adjustments of insulin doses are permitted if patient has diabetes) Exclusion Criteria: * Currently receiving parenteral feeding or presence of a nasogastric or other enteral tube * History of gastric surgery such as fundoplication, gastrectomy, or vagotomy * Symptoms suggestive of gastroparesis with no diagnosis of diabetes * Pregnancy or expect to conceive during the course of the study * Uncontrolled diabetes mellitus (HbA1c \> 11%). * Having any implanted medical device, such as cardiac pacemaker or Entera device