Caused of cold sores or fever blister is herpes simplex virus 1 (HSV-1), and give manifestation in lips. Cold fever (fever blister) find in 3 or 10 day after exposure and still remain up to 3 weeks.
The virus (HSV-1) keep in dormant phase and waiting until triggered by cold, fever or viral infection, sun and wind exposed, menstruation, stress or depression of immune system, high concentration of amino acid arginine.
The virus (HSV-1) keep in dormant phase and waiting until triggered by cold, fever or viral infection, sun and wind exposed, menstruation, stress or depression of immune system, high concentration of amino acid arginine.
