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Why do I have swelling and blisters on the upper lip?

Q: I am a 28 years old married woman having thyroid and polycystic ovary syndrome (PCOS) for the last 5 years. But my problem is that my upper lip swells, become red and small blisters occur on it. I consulted the doctor who said that it was because of air or climate changes or might be due to applying saliva on my lips. She asked me to use Vaseline regularly. I have noticed that it stays for a month and then it goes. But since last year the blisters occurs every month. I apply flutibact but in vain. What is the cause of developing blisters on the upper lip? The blisters form a crust and when I remove the crust it pains and some liquid comes out of it. Is it a kind of allergy?

A:The most probable disorder you have is herpes labialis. This is a chronic condition characterized by exacerbations and recurrences. It is likely to come up whenever the body resistance goes down. With the passage of time, it usually becomes milder and milder. However, redness, swelling and blisters can also occur in eczemas and contact dermatitis. In such cases once the underlying cause is found and eliminated, the problem resolves.

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