What Is The Main Cause of Cold Sores?
The following are some common causes of cold sores: (3)
- HSV-1 or HSV-2 infection: Cold sores are most commonly caused by HSV-1, which is highly contagious and can be spread through close personal contact, such as kissing or sharing utensils. Cold sores caused by HSV-2 are less common.
- Stress: Emotional stress can weaken the immune system and trigger the reactivation of the herpes virus, leading to the development of cold sores.
- Sun exposure: Exposure to sunlight can trigger the reactivation of the herpes virus and cause cold sores to develop.
- Hormonal changes: Changes in the body hormone levels, such as those that occur during menstruation, can weaken the immune system and trigger the reactivation of the herpes virus.
- Fever: High fever can weaken the immune system and trigger the reactivation of the herpes virus, leading to the development of cold sores.
- Trauma: Trauma to the lips or mouth, such as a cut or injury, can trigger the reactivation of the herpes virus and cause cold sores to develop.
Of note, cold sores are highly contagious and can be spread to others even when the infected person does not have visible sores. Avoid close contact with others during an active cold sore, and avoid sharing utensils or other personal items.