Cold sores, or fever blisters, are caused by the herpes simplex virus (HSV-1). Once infected, the virus stays dormant and can reactivate due to stress, illness, or sun exposure, leading to painful blisters around the lips, nostrils, or chin.
Antiviral medications like acyclovir or valacyclovir can speed healing when taken early. Over-the-counter creams with docosanol or lidocaine help ease discomfort. Home remedies like aloe vera, lemon balm, or tea tree oil may soothe irritation and promote healing.
Preventing outbreaks involves avoiding triggers like stress and sun exposure. Strengthening the immune system with a healthy diet, regular exercise, and good hygiene can help reduce occurrences. Frequent handwashing and avoiding shared personal items prevent the virus from spreading.
