Chronic GI disorder characterized by delayed gastric emptying without mechanical obstruction
More common in women, presumed due to elevated progesterone
Symptoms overlap with functional dyspepsia
Idiopathic (most common)
Diabetes mellitus
Postsurgical/Vagal nerve injury
GI disorders associated with delayed emptying:
GERD, Achalasia
Atrophic gastritis, celiac disease
Functional dyspepsia
Hypertrophic pyloric stenosis
Non-GI conditions/risk factors associated with delayed gastric emptying
Medications: opioids, anticholinergics, PPIs, alcohol, tobacco, progesterone
Eating disorders: Anorexia nervosa
Parkinson's disease and other neurologic disorders
Collagen vascular disease
Parathyroid/thyroid disorder
Chronic renal insufficiency
Malignancy
Ischemic<unk> 
GERD, Achalasia
Atrophic gastritis, celiac disease
Functional dyspepsia
Hypertrophic pyloric stenosis
Medications: opioids, anticholinergics, PPIs, alcohol, tobacco, progesterone
Eating disorders: Anorexia nervosa
Parkinson's disease and other neurologic disorders
Collagen vascular disease
Parathyroid/thyroid disorder
Chronic renal insufficiency
Malignancy
Ischemic<unk>
Gastroparesis
ACS/MI
Dysphagia
Boerhaave's
Dysuria
DKA
Constipation 
Intracranial Hemorrhage