
A doctor has revealed a symptom that could ultimately be a sign of a deadly cancer that's 'one of the fastest growing in the world'.
Cancer has been on the rise in younger people for the past few years, and much research is going into uncovering why this worrying trend is happening.
To enable a swift recovery, it's extremely important symptoms of potential cancers are seen to by a doctor as soon as possible for the best possible outcome.
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Head and neck cancers are on the rise, with Cancer Research UK stating that almost 13,000 cases are reported every single year.

As per the Mirror, Oncologist Dr Jiri Kubes, who works at the Proton Therapy Center in Prague, said: "Earlier diagnosis is absolutely crucial. The sooner we can identify head and neck cancer, the better the outcome.
"It is considered one of the fastest growing types of cancer in the world but there is still a worrying lack of awareness around head and neck tumours."
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Persistent blocked ears may be a sign something might not be quite right as Dr Kubes explained: "This is a similar feeling to the one you might get after diving into a swimming pool. Stubborn earache also could be a sign there’s cancer around that area."
Sore gums and ulcers could also be a cause for concern as the expert added: "Don't just shrug off an ulcer - get it checked out by your GP as it could be a cancerous lesion. Pain in your teeth and white or red patches in the mouth are also tell-tale symptoms."

Meanwhile, if you have a sore throat that 'lasts for more than two weeks, or if you experience any voice changes or hoarseness, this should ring alarm bells', according to Dr Kubes.
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It comes after a fellow doctor warned people never to ignore common cancer symptom that’s often dismissed during hot weather.
Night sweats can become a common occurrence due to the increase in temperature, but Dr Suhail Hussain has warned that if they're frequently happening then it could be a sign of a serious underlying condition.
He said it may be sign of leukaemia or lymphoma - two cancers that affect blood cells.
While leukaemia is primarily a cancer of the bone marrow, lymphoma affects the lymphatic system.
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Like with the ear symptom, such symptoms doesn't necessarily mean you've got cancer, though it's always best to seek advice from a medial professional for clarity.
If you’ve been affected by any of these issues and want to speak to someone in confidence, contact the American Cancer Society on 1-800-227-2345 or via their live chat feature, available 24/7 every day of the year.