Cold sores, characterized by fluid-filled red blisters, typically manifest around the lips and nose. They are a result of a viral infection, which can also lead to the development of cold sores inside the mouth and their potential spread to the fingers. Cold sores are incredibly common, as about 90 percent of adults carry the virus responsible for their occurrence, even if some individuals do not experience any symptoms.
Cold Sore Causes
Cold sores are typically caused by a type of the herpes simplex virus known as HSV-1. While HSV-2 is responsible for genital herpes, it can also lead to facial sores. It is estimated that over 50 percent of Americans have been infected with HSV by the time they reach their 20s. Although many infected individuals do not develop visible cold sores, they can still transmit the virus to others. The virus is most contagious when cold sores are visible, but it can also spread through close contact and the sharing of food or cosmetics.
Cold Sore Symptoms
Cold sores are characterized by various symptoms that can indicate the presence of an outbreak. These symptoms typically begin with a tingling, itching, or burning sensation near the lips and nose. As the infection progresses, visible sores develop, usually in the form of a cluster of red blisters filled with fluid. These blisters can be sensitive to touch and can persist for approximately two weeks.
In addition to the physical symptoms mentioned above, a cold sore outbreak can also cause other discomforts. Fever, muscle pain, and swollen lymph nodes are commonly associated with cold sores. It is worth noting that individuals who frequently experience cold sores may notice that the blisters tend to appear in the same location and become less painful over time.