Cold sores, also known as fever blisters, are blister-like lesions or small sores that usually form inside the mouth or on the face. They cause a burning sensation, pain and itching before they burst. Most commonly, cold sores appear on the cheeks, chin,
You woke up this morning, and suddenly, you notice a blister on your lips. You think it will go away by itself, but then, other symptoms start to develop. You experience itching and a burning sensation in the mouth, and have trouble eating as your mouth has become extra sensitive. These are all symptoms of a cold sore.