Dermatologists give us the low-down. Waking up with a spot on your lip is never a good feeling. Often cold sores or pimples are to blame, though telling the difference isn't always easy.

Cold sores occur on the outside of the mouth and are caused by the herpes simplex virus. Canker sores are blisters inside the mouth that can occur due to injury, nutritional deficiencies ...

The main symptoms are blisters or sores around the mouth and nose that burst and ooze before drying up. Other symptoms will depend on the type of impetigo. Nonbullous impetigo accounts for 80% of ...

Understand the term 'herpes' and its association with viral skin diseases, including cold sores, shingles, and genital herpes ...