Our expert says:
Are the sores outside on the lips or inside? Talking about a dentist sounds like it is on the inside of the lip but should then not be caused by sun damage? How does the ulcer look ? ( superficial and flat, or deep with a edge? ) what colour is the inside (base) ? Is it painful or not? How does it start - with a blister? How big does it get?
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.