Learn 8 possible warning signs of pancreatic cancer, including jaundice, unexplained weight loss, digestive changes, abdominal pain, fatigue, blood clots, and new diabetes.
Pancreatic cancer can be difficult to recognize because early pancreatic cancer often causes few or no noticeable symptoms. When symptoms do appear, they can resemble much more common digestive or other health problems.
That doesn’t mean every stomach problem or episode of fatigue is a sign of cancer. In fact, most of these symptoms have causes other than pancreatic cancer. But persistent, unexplained, or worsening changes deserve medical attention.
Here are eight signs worth knowing.
1. Yellow Skin or Yellow Eyes
One of the most recognizable warning signs is jaundice, which causes the skin and whites of the eyes to turn yellow.
It can happen when a tumor blocks the bile duct, causing bilirubin to build up in the body. Jaundice may also cause dark urine, pale or gray stools, and itchy skin.
However, gallstones, hepatitis, and other liver or bile-duct conditions are much more common causes of jaundice.
Don’t ignore new jaundice—seek medical evaluation promptly.
2. Unexplained Weight Loss
Losing weight without intentionally changing your diet or activity level can be an important warning sign.
Pancreatic cancer may cause weight loss through reduced appetite, digestive problems, or other effects of the disease.
Unexplained weight loss has many possible causes, including thyroid disorders, gastrointestinal diseases, infections, and other cancers, so it requires investigation rather than self-diagnosis.
3. Persistent Upper-Abdominal or Back Pain
Pain associated with pancreatic cancer can occur in the upper or middle abdomen and may extend into the back. Tumors can press on nearby structures or affect nerves surrounding the pancreas.
Pain in the abdomen or back is extremely common and usually has causes unrelated to cancer. The concern is particularly when pain is persistent, unexplained, or accompanied by other symptoms such as weight loss or jaundice.
4. Greasy or Unusually Pale Stool
Changes in bowel movements can sometimes provide clues about problems with digestion.
When bile or pancreatic digestive enzymes cannot reach the intestine normally, stools may become pale, gray, greasy, or difficult to flush.
These changes can also occur with other pancreatic, gallbladder, liver, or intestinal conditions.
5. Persistent Nausea or Vomiting
Pancreatic tumors can sometimes interfere with the passage of food from the stomach into the intestine, resulting in nausea, vomiting, abdominal discomfort, or symptoms that become worse after eating.
Occasional nausea is common and usually isn’t related to cancer. Persistent vomiting or difficulty eating should be evaluated.
6. Unusual Fatigue or Weakness
Some people with pancreatic cancer experience significant fatigue or physical weakness that isn’t explained by their normal activity level.
Fatigue is extremely nonspecific, however. Poor sleep, anemia, infections, medications, stress, nutritional deficiencies, and numerous other conditions can cause it.
The important factor is a persistent or unexplained change in your normal energy level.
7. A New Blood Sugar Problem
The pancreas plays an important role in regulating blood glucose. Pancreatic cancer can sometimes cause diabetes or changes in blood sugar because of effects on insulin-producing cells.
New symptoms such as increased thirst, frequent urination, or unexplained changes in blood sugar should be discussed with a healthcare professional.
Having diabetes does not mean you have pancreatic cancer. Diabetes is common and has many causes.
8. An Unexpected Blood Clot
In some cases, pancreatic cancer is associated with blood clots, including deep vein thrombosis (DVT).
Possible DVT symptoms include swelling, pain, redness, or warmth in one leg. A clot that travels to the lungs can cause sudden shortness of breath or chest pain and requires emergency medical attention.
Most blood clots are caused by conditions other than pancreatic cancer, so a clot does not automatically indicate cancer.
Why Pancreatic Cancer Can Be Difficult to Detect
The pancreas is located deep inside the abdomen, and early tumors may not produce noticeable symptoms. There is also no routine pancreatic-cancer screening recommended for people at average risk by major professional groups.
When concerning symptoms occur, doctors may use a medical history and physical examination followed by blood tests and imaging studies. If necessary, additional testing, including biopsy, may be used to determine the cause.
When Should You See a Doctor?
Don’t panic if you experience one of these symptoms. These signs are not proof of pancreatic cancer, and many are much more commonly caused by other illnesses.
But contact a healthcare professional if you develop symptoms that are:
- Persistent or getting worse
- Unexplained
- Occurring together
- Associated with significant unintentional weight loss
- Accompanied by jaundice
- Causing ongoing digestive problems
New jaundice deserves particularly prompt medical assessment.
Final Takeaway
Pancreatic cancer can be difficult to recognize in its early stages, which makes awareness important. Jaundice, unexplained weight loss, abdominal or back pain, unusual stool changes, persistent nausea, fatigue, new blood-sugar problems, and blood clots can all occur with pancreatic cancer—but they can also result from many other conditions.
The safest approach is not to assume the worst, but not to ignore persistent or unexplained changes either. A healthcare professional can determine what is actually causing the symptoms.