Brief Answer:
Could be angioedema.

Detailed Answer:
Hello and welcome.

Dryness of lip can be attributed to loss of moisture from lips.
sometimes it can be seen in exaggerated forms too.

But before coming to conclusion i would like to know few more details from your side.please answer them for better suggestions.

1.Do you have any pain in chin area or enlarged glands?
2.Do you have any other lesion in mouth or any other parts.
3.The swelling of lips is continuous or it is on and off?
4.Are you taking any medication for any respiratory disorders?
5.Any pain swelling and jagged teeth in your mouth?
Awaiting your response.
Thanks.
Take care.

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Brief Answer:
Antihistamines and corticosteroids can be given.

Detailed Answer:
Hello and thanks for reply.

In my opinion your symptoms are suggestive of angioedema (Idiopathic swelling of lips).

In simple terms I can say that it is a kind of allergy. It can start from food stuffs, drugs, physical factors, some pain killers called as NSAIDS can also cause this to happen. Perhaps a few drugs prescribed during sinus infection might have triggered this problem.

Now, my suggestion is that please keep a close watch on the lesion and try to find out factors that exaggerates the swelling.

Antihistamines like Cetrizine and Steroids are the treatment options. Your local physician can help you with a prescription. You may also include vitamin supplements to the above regimen.

Do not be concerned. Your symptoms can be easily treated.

Hope I have given you detail answer.

Let me know for further doubts.

Thanks.
Take care.

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