The crisis then often manifests itself on the lips or around the lips, by a burning or tingling sensation followed by the appearance of a red plaque on which small vesicles are grafted in a bouquet. After a few days, the vesicles rupture and lead to the formation of scabs which eventually fall off, without leaving a scar. The push usually lasts between 5 and 10 days.
UV prevention
However, strong exposure to the sun can trigger a strong attack. “It is mainly UVB rays that are responsible for this, probably through a reduction in the immune defences”, can we read on the website of Pediatrician Online.
This is why it is necessary to protect the fragile skin of the lips and around the mouth with suitable photoprotection, with high protection sticks for the lips, to be applied every 2 hours, overflowing by one centimeter around the mouth. .
It is also possible, in additional prevention, to apply acyclovir cream in the evening, an antiviral available over the counter. And if you are frequently prone to cold sores in the sun, ask your dermatologist or your doctor to prescribe you acyclovir tablets, to be taken in a preventive dose (400 mg morning and evening).
Finally, be sure to rest well, to avoid adding fatigue – another triggering factor – to the sun.