Fatigue can weaken your body's immune system thus can increase your potential for a cold sore episode. Make sleep, rest and relaxation a part of your day, every day.
Stress can weaken your immune system, allowing the dormant cold sore virus to come to the surface. Become more conscious of your physical health during stressful times and try to get plenty of rest, eat the right foods and participate in relaxing activities.
Exposure to extremely cold weather and wind can dry out your lips and the sensitive area around your mouth. This exposure can trigger a cold sore. In extreme cold weather cover and protect your face and mouth - both with moisturizers and a scarf. Apart from that use gentle extra-moisturizing cleansers and hydrating masks to keep your skin moist and drink lots of water to keep your body hydrated.
Sure they're called cold sores, but they're often triggered by the sun. Sunlight and ultraviolet (UV) rays can damage skin and trigger cold sores. Where possible apply sunscreen and lip moisturizer - with UV-A and UV-B protection (SPF 15 or higher) and take note of reflection of sunlight from water and snow.
Hormonal changes due to menstruation can trigger cold sores. It may be that these hormonal changes can weaken your body's immune system. And while we can't control these changes, keep your body healthy by following a good eating habits and diet. Make sure your body is getting enough vitamins and minerals through your diet or supplements
Fever, Cold or Flu
A fever, a cold or the flu can weaken your body's immune system. Keep your immune system strong by eating healthy, taking vitamins and getting plenty of rest.