Numbness is a sign that there is damage, irritation, or compression of the nerves. One reason a person with salivary gland cancer may experience numbness is if cancer has spread to the nerves. Alternatively, the tumor in the salivary gland may be putting pressure on the nerves, cutting off feeling from that part of the face. Numbness across one or both sides of the face calls for an immediate visit to the doctor. There are many other reasons a person may be experiencing numbness in the face. Some are more serious, some less, but the cause should undoubtedly be investigated.
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