Unexplained Nausea

What Causes Unexplained Nausea?

Unexplained nausea can have various causes, ranging in severity from 'minor' to 'generally fatal'.  Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.

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Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms.  In order to diagnose unexplained nausea, 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 "unexplained nausea" as a symptom.  Here are eight of many possibilities (more below):
  • Food Poisoning
  • Copper Toxicity
  • Atrophic Gastritis
  • Poor Digestion
  • Gastritis
  • Heartburn
  • Low Carbohydrate Diet Consequences
  • 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:
occasional rashes
regular bicarbonate use
major unexplained weight loss
frequent acid reflux during sleep
atrophic gastritis
meal-related bloating
nausea for 1-3 months
frequent meal-related bloating
abdominal pain reduced by eating
meal-related pain for under a week
arrhythmia
bowel movement changes
... and more than 70 others

Step 3: Rule Out or Confirm each Possible Cause

A differential diagnosis of your symptoms and risk factors finds the likely cause of unexplained nausea:
Cause Probability Status
Poor Digestion 92% Confirm
Low Carbohydrate Diet Consequences 18% Unlikely
Food Poisoning 13% Unlikely
Copper Toxicity 3% Ruled out
Delayed Gastric Emptying 2% Ruled out
Heartburn 1% Ruled out
Gastritis 0% Ruled out
Atrophic Gastritis 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.

In the Gastrointestinal Symptoms section of the questionnaire, The Analyst™ will ask the following question about unexplained nausea:
Approximately how often do you suffer from unexplained nausea? Do not include nausea that has an obvious cause, for example pregnancy, hunger or motion sickness.
Possible responses:
→ Don't know
→ Never / very rarely
→ Occasionally - a few times per year
→ Regularly - a few times per month
→ Often - several times per week
Based on your response to this question, which may indicate no unexplained nausea, occasional unexplained nausea, regular unexplained nausea or frequent unexplained nausea, The Analyst™ will consider possibilities such as:
Congestive Heart Failure

Accumulation of fluid (due to congestive heart failure) in the liver and intestines may cause nausea, abdominal pain, and decreased appetite.

Fluoride Toxicity

Nausea is an early sign of fluoride toxicity.

Gastroenteritis

Acute gastroenteritis is a common cause of acute care-seeking and is second only to the common cold as a cause of lost work time.  Bacterial, viral, and parasitic pathogens cause this illness which is characterized by diarrhea and/or vomiting.  Vomiting is especially common with infections caused by rotaviruses, enteric adenovirus, Norwalk agent, and calicivirus.

Hyperparathyroidism

In more severe cases there may be loss of appetite, nausea, vomiting, constipation, confusion or impaired thinking and memory, and increased thirst and urination.

Malaria

Nausea, vomiting, and diarrhea may occur.

Zinc Toxicity

Symptoms of zinc toxicity include nausea, vomiting and fever.

Concerned or curious about your health?  Try The Analyst™
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