Understanding Cold Sores: Causes, Triggers, and Treatment
Cold sores are small, blister-like lesions that usually appear around the mouth and sometimes the nose. They are caused by the herpes simplex virus. The strain that usually causes them around the mouth is herpes simplex type 1 (HSV-1). The herpes simplex virus, or ‘cold sore virus’, is highly contagious and can be passed easily […]