'Rotten Egg', 'Eggy' Or 'Sulfur-Tasting' Burps

What Causes Rotten Egg Burps?

Rotten egg burps can have various causes, ranging in severity from 'worrying' to 'serious'.  Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.

Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms.  In order to diagnose rotten egg burps, we could:
  • Research the topic
  • Find a doctor with the time
  • Use a diagnostic computer system.
The process is the same, whichever method is used.

Step 1: List all Possible Causes

We begin by identifying the disease conditions which have "rotten egg burps" as a symptom.  Here are eight possibilities (more below):
  • Food Allergies
  • Gallbladder Disease
  • Stress
  • Helicobacter Pylori Infection
  • Gluten Sensitivity
  • Bacterial Dysbiosis
  • Heartburn
  • Delayed Gastric Emptying

Step 2: Build a Symptom Checklist

We then identify all possible symptoms and risk factors of each possible cause, and check the ones that apply:
orange stool color
calcium-based antacid use
frequent meal-related bloating
major joint pain/swelling/stiffness
liver/gallbladder cleanses help
high systolic blood pressure
having foamy urine
eyelid twitch
gastritis
discomfort caused by mold/mustiness
craving for salt
severe fatigue after slight exertion
... and more than 130 others

Step 3: Rule Out or Confirm each Possible Cause

A differential diagnosis of your symptoms and risk factors finds the likely cause of rotten egg burps:
Cause Probability Status
Food Allergies 97% Confirm
Bacterial Dysbiosis 29% Unlikely
Heartburn 27% Unlikely
Stress 2% Ruled out
Gallbladder Disease 1% Ruled out
Helicobacter Pylori Infection 0% Ruled out
Delayed Gastric Emptying 0% Ruled out
Gluten Sensitivity 0% Ruled out
* This is a simple example to illustrate the process

Arriving at a Correct Diagnosis

The Analyst™ is our online diagnosis tool that learns all about you through a straightforward process of multi-level questioning, providing diagnosis at the end.

If you indicate digestive problems, The Analyst™ will ask further questions including this one:
Do you ever suffer from very foul burps that can best be described as having a 'rotten egg' or 'sulfur' smell/taste?
Possible responses:
→ No / rarely / don't know
→ Yes, but only if I eat too much
→ Yes, a few times a year even if I don't overeat
→ Yes, a few times a month even if I don't overeat
→ Yes, frequently even if I don't overeat
Based on your response to this question, which may indicate rotten egg burps after overeating, occasional rotten egg burps, rotten egg burps or frequent rotten egg burps, The Analyst™ will consider possibilities such as:
Giardiasis Infection
Recurrent "rotten-egg" burps accompanied by diarrhea could be a sign of Giardia lamblia infection.

Related Questions

Gastro-Intestinal Symptoms