Abdominal pain is a common symptom that can be caused by many conditions, including cancer. In cancer, this pain may result from the tumor itself, its spread to other organs, or side effects of treatment.
Cancers that can cause abdominal pain include pancreatic cancer, liver cancer, stomach cancer, colorectal cancer, and ovarian cancer.
Early-stage stomach cancer may cause upper abdomen discomfort, which is usually rated as mild to moderate and described as bloating or a dull pain. Pain can increase in frequency from dull to sharp as cancer develops.
Some women with ovarian cancer may experience pelvic or abdominal pain, bloating, or changes in appetite.
So if you’re experiencing consistent, repetitive or severe abdominal pain — especially if it’s accompanied by weight loss, nausea or difficulty eating — it’s wise to have a healthcare provider assess the situation.
3. Headaches and Neurological Symptoms

Although most headaches are caused by dehydration, illness, or sinus problems and aren’t usually concerning, they can also indicate a brain tumor, so it’s important to know what other warning signs to look for.
Because the skull is made of bones, anything that grows inside it — such as a tumor — can raise pressure on the brain. This increase in intracranial pressure frequently presents as headaches.
Consult with your doctor if you are dealing with new headache patterns, headaches that wake you from a sound sleep or are very painful; nausea, vision issues (flashing lights or blind spots), or headaches that worsen over weeks or months.
According to The Brain Tumor Charity, headaches caused by brain tumours are usually not relieved by painkillers, worse in the morning, and aggravated by straining, coughing, shouting, or bending over. Their intensity may lessen when standing upright, as cerebrospinal fluid (CSF) begins to drain.
Disclaimer: This article is for informational purposes only. Consult a healthcare professional if you notice warning signs or changes in your body.