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.
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:
|West Nile Virus||14%||Unlikely|
|Food Poisoning||0%||Ruled out|
|Increased Intestinal Permeability||0%||Ruled out|
|Non-Hodgkin's Lymphoma||0%||Ruled out|
|Delayed Gastric Emptying||0%||Ruled out|
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
Accumulation of fluid (due to congestive heart failure) in the liver and intestines may cause nausea, abdominal pain, and decreased appetite.
Enlarged Spleen also suggests the following possibilities:
Hypersplenism is sometimes referred to as enlarged spleen (splenomegaly), but in fact an enlarged spleen is one of the symptoms of hypersplenism. What differentiates hypersplenism is its premature destruction of blood cells.
About 50-75% of people with mononucleosis have some spleen enlargement, usually seen two to three weeks after they first become sick. Whether or not the spleen is enlarged, people who have mono should not lift heavy objects or exercise vigorously – especially participating in contact sports – for two months after they get sick, because these activities increase the risk of rupturing the spleen, which can be life-threatening. If you have mono and get a severe sharp, sudden pain on the left side of your upper abdomen, go to an emergency room immediately.
ALL, CML, or hairy cell leukemia can cause enlargement of the spleen.
Nausea is an early sign of fluoride toxicity.
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.
In more severe cases there may be loss of appetite, nausea, vomiting, constipation, confusion or impaired thinking and memory, and increased thirst and urination.
Symptoms of zinc toxicity include nausea, vomiting and fever.