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The usual signs and symptoms of cancer include significant weight loss, fever, fatigue and pain, states the American Cancer Society. Cancer's signs and symptoms depend on its location and size and the extent of its effect on the body's organs and tissues.


Cancer symptoms vary depending on the type of cancer, but unexplained weight loss, fatigue, skin changes, fever and pain are some general signs and symptoms of cancer, says the American Cancer Society. If these signs or symptoms persist or worsen, medical evaluation is in order.


Common symptoms of oral cancer in dogs include excessive drooling, bad breath and difficulty eating. Bleeding from the mouth, weight loss and loose teeth are other common symptoms.


Dogs can smell the chemical markers that indicate certain types of cancer, according to PedMD. The first suggestion of using dogs for detecting cancer was documented in a 1989 medical journal, and since then, there have been several research studies on the subject.


Skin cancer symptoms include moles that change in size, color or texture; flat lesions with a crusted surface; and a pearly, waxy bump. There are several different types of skin cancer, and each presents with a slightly different set of symptoms, as stated by Mayo Clinic.


Some major symptoms of cancer include coughing up blood with lung cancer, and blood in the stool is a symptom of colon cancer. Different cancers exhibit different symptoms. If unusual bodily changes occur, seek the advice of a medical professional right away, says the American Cancer Association.


Potential symptoms of bone cancer include bone pain, broken bones, and tenderness or swelling near the area affected by the disease, reports Mayo Clinic. Patients with bone cancer may also experience unintentional weight loss and fatigue.


Seizures, headaches, weakness and clumsiness are among the more common symptoms of brain cancer, according to WebMD. Weakness and clumsiness may make walking or other activities more difficult. Other generalized symptoms include vision changes, nausea and vomiting, difficulty with speech and cogniti


Symptoms of stomach cancer manifest as stomach pain, nausea, the inability to eat usual amounts of food, persistent vomiting, severe and continual heartburn, uncontrollable weight loss and extreme indigestion, notes Mayo Clinic. If any of these symptoms occur without relief for a prolonged period of


According to Medical News Today, symptoms of foot cancer include lumps or blemishes on the foot, new moles, open sores and swelling or itchiness. Cancerous moles or tumors generally start under toenails or on the bottom of the foot.