Mouth cancer or oral cavity cancer is formed when cancerous cells occur in oral cavity. It can develop in lips, gum, tongue, inner lining of cheeks, ceiling of the mouth or floor of the mouth.

In early stages, it may occur like just an infection or scar. But later, it starts to grow severe and painful. Symptoms of oral cavity cancer includes:

• A lip or mouth sore that doesn't heal
• A white or reddish patch on the inside of your mouth
• Loose teeth
• A growth or lump inside your mouth
• Mouth pain
• Ear pain
• Difficult or painful swallowing

 

Very similar to the oral cavity cancer people tend to develop pharynx cancer, generally referred as throat cancer. There are various types of throat cancer, classified by the location of the occurrence. Few symptoms associated with throat cancer are:

• Consistent cough with blood.
• Changes in your voice, such as hoarseness or not speaking clearly
• Difficulty swallowing
• Ear pain
• A lump or sore that doesn't heal
• A sore throat
• Weight loss

 

Both cancers are mostly caused by some common factors. That includes smoking, chewing tobacco and drinking alcohol. Though people who are not associated with these also can develop oral cavity cancers or pharynx cancers. Viral infections, exposure to toxic substances and other factors play a major role here.

According to Statista, the cases between 2009 and 2021 has increased about 53.72% in men, in the USA.

Sources:

Throat cancer - Symptoms and causes - Mayo Clinic

Mouth cancer - Symptoms and causes - Mayo Clinic

Mouth and Throat Problems and Cancer Treatment - Side Effects - National Cancer Institute