Canker sore causes aren't entirely clear ... on the lips, or near the nose. Canker sores, in contrast, develop within the mouth. They’re located on the soft tissues of the inside of the ...

These symptoms usually last up to two weeks and may cause dehydration, especially in young children, because it is painful to ...

BLISTERS MIGHT NOT seem like a big deal—until you get one and remember how debilitating they can be. These painful skin lesions are caused by friction when your skin rubs against your shoes ...