Be very careful if it comes out in your mouth, you are…
Cold sores, or fever blisters, are a common viral infection usually caused by herpes simplex virus type 1 (HSV-1), though HSV-2 can also cause them through oral-genital contact. They are highly contagious, spreading through direct contact like kissing, or indirect contact via shared items such as towels, utensils, or lip balm. Touching a sore and…