6. Permanent tongue lesions
While we’re on the subject of weird bumps on your tongue, if you see one of these guys, take a quick trip down to the doctor. Different from canker-sores or ulcers in that they don’t go away after two weeks, they should be checked immediately. Even if you’re unsure of whether it’s a canker sore or a potentially carcinogenic lesion, it’s always best to err on the side of caution and get an expert opinion.