Untreated syphilis can spread to the nervous ... However, a singular, hard bump on the tongue can be a cancerous growth. Sores, red or white spots, irritated spots, numbness, lumps, and growths ...

Some people may develop sores or blisters on the tongue. Mouth symptoms can last ... order a blood test to rule out infections such as syphilis and TB. If the doctor suspects cancer, they may ...