Distinguishing Gastroenteritis from Gastroparesis by Symptoms

Key Symptom Differences

Nausea and vomiting are present in gastroenteritis, but typically resolve within 24-72 hours, according to the American Gastroenterological Association 1
Abdominal cramping in gastroenteritis is diffuse and colicky, as noted by the American Gastroenterological Association 2
Fever and systemic symptoms, such as malaise and myalgias, are common in gastroenteritis, as reported by the American Gastroenterological Association 2
The absence of diarrhea is a critical distinguishing feature of gastroparesis, as stated by the American Gastroenterological Association 2
Nausea is often the most prominent and persistent symptom in gastroparesis, according to the American Gastroenterological Association 4
Vomiting in gastroparesis may contain undigested food from hours earlier, as noted by the American Gastroenterological Association 3
Early satiety, or the inability to finish normal-sized meals, is a characteristic symptom of gastroparesis, as reported by the American Gastroenterological Association 3
Symptoms of gastroparesis worsen with solid foods, especially high-fat and high-fiber meals, according to the American College of Gastroenterology 1

Diffuse abdominal tenderness without localization is common in gastroenteritis, as noted by the American Gastroenterological Association 2
Hyperactive bowel sounds are often present in gastroenteritis, as reported by the American Gastroenterological Association 2
Signs of dehydration, such as dry mucous membranes, tachycardia, and orthostatic hypotension, may be present in gastroenteritis, according to the American Gastroenterological Association 2
A succussion splash, or audible fluid splashing sound, may be heard in gastroparesis, indicating retained gastric contents, as noted by the American Gastroenterological Association 2
Epigastric tenderness or distention may be present in gastroparesis, as reported by the American Gastroenterological Association 3
Normal or hypoactive bowel sounds are common in gastroparesis, according to the American Gastroenterological Association 2
Signs of malnutrition or weight loss may be present in chronic cases of gastroparesis, as noted by the American Gastroenterological Association 4

Gastroenteritis presents with sudden onset after exposure, peaks within 24-48 hours, and resolves within days, as reported by the American Gastroenterological Association 1
Gastroparesis has either gradual onset or begins after a viral illness, but then persists chronically, according to the American Gastroenterological Association 3

A viral gastroenteritis can trigger gastroparesis, with approximately 82% of patients with idiopathic gastroparesis having had a preceding viral illness, as noted by the American Gastroenterological Association 3

Symptoms persisting beyond 2 weeks may indicate gastroparesis, according to the American Gastroenterological Association 3
The absence of diarrhea throughout the illness is a key feature of gastroparesis, as stated by the American College of Gastroenterology 1
Vomiting of undigested food from meals eaten hours earlier may indicate gastroparesis, as reported by the American Gastroenterological Association 3
Symptoms worsening specifically after solid meals may suggest gastroparesis, according to the American College of Gastroenterology 1
Weight loss due to inability to maintain oral intake may be present in gastroparesis, as noted by the American Gastroenterological Association 4
A history of diabetes mellitus, which affects 20-40% of diabetics, may increase the risk of gastroparesis, as reported by the American Gastroenterological Association 3

Documentation of delayed gastric emptying via gastric emptying scintigraphy with a 4-hour test duration is the gold standard for diagnosing gastroparesis, as stated by the American Gastroenterological Association 3
The diagnosis of gastroparesis cannot be made on symptoms alone, as there is significant overlap with functional dyspepsia, according to the American Gastroenterological Association 6