What causes cold sores on the lips?
Disease description:
I went to sleep perfectly fine, but woke up with a blister on my lip. It's so sensitive that any touch hurts, and eating is painful too. I went to see a doctor and was told it's herpes. What causes herpes on the lips?
Doctor's answer (1)
Dr. Guo Huijie
The causes of lip herpes are varied, primarily including the following aspects:
1. Viral infection: Herpes viruses, such as herpes simplex virus, are the main pathogens responsible for lip herpes. These viruses can spread through respiratory droplets, direct contact, or the fecal-oral route, and are more likely to infect individuals when their immune resistance is low.
2. Unhealthy lifestyle habits: Chronic sleep deprivation, excessive fatigue, and irregular eating patterns can weaken the body's immunity and increase the risk of viral infection. It is recommended to maintain regular作息 (sleep-wake cycles), balanced nutrition, and strengthen the body's resistance.
3. Weakened immunity: Factors such as lack of physical activity and malnutrition may lead to reduced immunity, making individuals more susceptible to viral infections. Regular exercise and a balanced diet can help boost immune function.
4. Other factors: Lip herpes may also be triggered by allergies, trauma, or deficiencies in trace elements and vitamins. In daily life, it is important to avoid exposure to allergens and protect the lips from injury.
