Hi,
Welcome to health care magic,
The causes of red itchy of lips could be either allergic or
stomatitis or traumatic (if there is history
injury) or idiopathic.
Here I would like to ask some questions.
Since how many days your daughter ide having this problem?
how did it started?
are you taking any treatment?
Here,I will keep the possibility of STDs in last after ruling out all other above common possibility first.
Meanwhile, she take some over the counter drugs for symptomatic relief.
1) anti-inflammatory (
ibuprofen)with
serratiopeptidase to reduce inflammation and swelling.
2) Antihistamines like
cetrizine (zyrtec) twice daily for 5 days.
3) vitamin b complex nutritional supplement twice daily.
Hope this will helps some relief.
If still problem persists you should see local doctor or GP to have a clear diagnosis.
Regards,