Should a cold sore swell?

Answer by  Travis404607 (3916)

Cold sores usually do not drastically swell. Excessive swelling can be a sign of a deep-tissue injury, such as from a traumatic injury to that portion of the body. These types of injuries cause trauma to the sub-dermal tissues and result in swelling as a protective mechanism against bacterial invasion.

Answer by  HilaryC (1382)

They can if their agitated and not cleaned. Make sure you take care of it. If it continues to get bigger or last a while, see a doctor.

Answer by  souldolphindream (835)

It could be that the it has become infected. I it is really bothering you I would make a appointment with you doctor to have it checked out.

Answer by  skm (432)

Cold sores are often red, inflamed, swollen, and painful. Cold sores should resolve on their own within 1-2 weeks. If the area of redness spreads, consider seeing a doctor.