9. Fatigue and Weakness

Persistent fatigue can be another nonspecific symptom.

Cancer-related fatigue is different from simply feeling tired after a poor night's sleep.

A person may feel unusually drained, have less physical stamina, or struggle with activities that previously felt easy.

Several mechanisms may contribute to fatigue, including reduced food intake, weight loss, inflammation, anemia, sleep problems, and changes in metabolism.

But fatigue is one of the least specific symptoms on this list.

Stress, depression, sleep apnea, iron deficiency, thyroid disorders, infections, medications, and dozens of other conditions can cause similar symptoms.

If fatigue is persistent, severe, or accompanied by other unexplained changes, it is reasonable to have it assessed.

10. Blood Clots Without an Obvious Explanation

An unexpected blood clot can sometimes be associated with underlying cancer, including pancreatic cancer.

A clot may develop in a deep vein, often in the leg, causing symptoms such as:

• Swelling
• Pain or tenderness
• Warmth
• Redness or discoloration

A blood clot can occur for many reasons, including prolonged immobility, surgery, certain medications, pregnancy, inherited clotting disorders, and other medical conditions.

But an unexplained clot—particularly one that occurs without an obvious trigger—may lead doctors to investigate for underlying causes.

A pulmonary embolism, in which a clot travels to the lungs, can cause sudden shortness of breath, chest pain, coughing, or coughing up blood.

Those symptoms require emergency medical attention.

Why Pancreatic Cancer Can Be Difficult to Detect

The pancreas is located deep within the abdomen.

Unlike some cancers that may produce an obvious lump or visible skin change early on, pancreatic tumors can develop without creating noticeable external signs.

Early symptoms can also overlap with common digestive problems.

For example:

Indigestion may be caused by reflux.

Back pain may be muscular.

Fatigue may be related to poor sleep.

Weight loss may have a dietary or metabolic cause.

Nausea may result from an infection or medication.

This overlap is one reason people shouldn't try to diagnose pancreatic cancer from a symptom checklist.

Instead, persistent or unexplained symptoms should be evaluated in context.

Risk Factors Worth Knowing

Not everyone has the same risk of developing pancreatic cancer.

Some factors associated with increased risk include:

• Increasing age
• Cigarette smoking
• A family history of pancreatic cancer
• Certain inherited genetic conditions
• Chronic pancreatitis
• Diabetes
• Obesity
• Some other inherited or medical conditions

Having one or more risk factors does not mean that a person will develop pancreatic cancer.

Likewise, someone without known risk factors can still develop the disease.