Expert answer:
Treatment for cold sores includes local hygiene and use of ointments or antiviral tablets.
Cold sores are an infection caused mainly by the virus Herpes simplex type 1, which is transmitted by direct contact with the wound of an infected person.
Symptoms include pain, redness and blisters on the spot, and the treatment is usually very effective in relieving, making the wounds disappear completely without leaving scars.
However, viruses are never completely eliminated, remaining alive inside nerve cells. In moments of stress or low immunity, they can reactivate, causing the appearance of new lesions.
Treatment must be prescribed by a general practitioner or dermatologist.
