What can cause a cold sore?

What can cause a cold sore?

• A. stress, heat, weight cut
• B. Bacterial infection
• C. Excessive sweating
• D. Sunburn

Answer: (A)

Cold sores appear when herpes simplex virus type 1, which stays dormant in nerve cells, becomes reactivated. This reactivation is triggered by factors that stress the body or weaken the immune system, such as emotional or physical stress, heat, dehydration, and the kinds of strain seen with rapid weight cutting in athletes. When the virus wakes up, it travels along nerves to the lips and causes the familiar sore. Bacterial infection isn’t how cold sores arise, so that option doesn’t fit. Excessive sweating isn’t a direct trigger by itself, though it often accompanies heat and stress. Sunburn is a known trigger due to UV exposure, but the combination of stress, heat, and weight cutting is a common, practical set of triggers in athletic contexts, which is why this option is considered best.

Cold sores appear when herpes simplex virus type 1, which stays dormant in nerve cells, becomes reactivated. This reactivation is triggered by factors that stress the body or weaken the immune system, such as emotional or physical stress, heat, dehydration, and the kinds of strain seen with rapid weight cutting in athletes. When the virus wakes up, it travels along nerves to the lips and causes the familiar sore.

Bacterial infection isn’t how cold sores arise, so that option doesn’t fit. Excessive sweating isn’t a direct trigger by itself, though it often accompanies heat and stress. Sunburn is a known trigger due to UV exposure, but the combination of stress, heat, and weight cutting is a common, practical set of triggers in athletic contexts, which is why this option is considered best.