Brown Spots on Tongue: Causes, Symptoms & When to See a Doctor

Allergies are not a known cause of brown spots on the back of the tongue. Brown spots on the back of the tongue can be caused by various factors, including certain medications, trauma, smoking, drinking coffee or tea, and dry mouth. If you are experiencing brown spots on the back of your tongue, it is essential to consult a medical professional for an accurate diagnosis and appropriate treatment.