Yes. A flu-like virus can certainly cause this. Stomach upsets can cause this. Ph levels that are off. Also it could be from too much acidity in the body. If one were to eat a pound of beautiful juicy tomatoes they are more than likely to have a very sore mouth and that includes under the tongue. If it continues for 4 - 5 days it's best to have your doctor have a look. Rinse your mouth out 3 - 4 times a day (especially before going to bed) with warm salted water. Gargle (getting it under the tongue) spit out BUT DON'T RINSE YOUR MOUTH OUT! You should also brush your teeth after every meal.
That's probably herpes of the mouth. Ask your doctor about Valtrex after he examines you if it is.
There are multiple factors that could cause a tongue to develop red blisters. Vitamin deficiencies, geographic tongue, scarlet fever and Kawasaki syndrome are among these factors.
I doubt the Vicodin caused the tongue blisters but it could have triggered the virus that is the cause of tongue blisters (canker sores on the tongue). They can be treated at the dentist office or a general practitioner's office. There is a solution that will help with the pain and treatment of the sores. If you have a dentist just go there and they will probably see you without an appointment since it only takes a few minutes to give you the solution.
There are many things that can cause blood blisters on the back of the throat. Some examples would be mononucleosis, herpes, or ulcers from excessive vomiting.
The Properties of nitrofurantoin can in some cases cause blisters on the tongue or around the mouth. But it has been found that the blisters result from over-usage or improper application methods, but no worries to help clear them up just stop using NF for a couple days and if the blisters get progressively worse then consult a physician or another licensed medical professional.
Depending on his age and whether hes sexually active or not, it could possibly be gonorrhea
Where are these blisters located?
Deficiency of the vitamins the tongue sore is the cause to tongue sore.
Working out won't cause fever blisters.
Trichomoniasis can cause a rash with red spots and itching, but doesn't cause blisters.
Mouth ulcers wich should clear with bonjela, a cream for the mouth. An abcess which is like a tooth infection but can spread. Do you smoke? This could be some form of cancer. You should see your doctor or dentist just to be safe
sunburns cause water blisters
Friction can cause blisters, yes - however, many sexual diseases cause blisters as well. If you have blisters on your sexual organs, you should see a doctor to make sure it's not a disease.