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A 35-year-old member asked:

if you have cancer, would extreme fatigue be a symptom of that?

3 doctor answers5 doctors weighed in
Dr. Gurmukh Singh
Pathology 49 years experience
Uncommon early: A latent cancer is not likely to cause extreme fatigue. A person with disseminated or advanced cancer would feel weak and fatigued. There are other causes of "fatigue" e.g., nutritional deficiency, depression, hormonal disorders etc. It would be prudent to consult your doctor if the symptoms last more a week or so.
Dr. Liawaty Ho
Hematology and Oncology 23 years experience
Not necessarily: While fatigue is one of the most common problem in cancer patients- however not all patients with cancer will experience extreme fatigue. Extreme fatigue can be caused by many other conditions- such as chronic disease- like diabetes, heart/lung/kidney problems, anemia, infections- psychological prolems- like depression etc. Some cancer patients are also without complain of significant fatigue.
Dr. Andrew Turrisi
Radiation Oncology 47 years experience
Can be..: But extreme fatigue runs the spectrum of many physical and psycological ailments.

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Last updated Apr 18, 2012
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