"Particularly swollen lips may indicate an allergic reaction ... or irritation caused by yeast," Dr. Camp tells us. "Sores or ...

If it is herpes, then applying aciclovir cream should help, but you should start doing this when your lips start to tingle - don't wait till they swell and blister. Taking aciclovir tablets ...

For informational purposes only. Consult a medical professional for advice. Source: Focus Medica. Infection of lips, mouth, and gums by herpes simplex virus. Oral herpes is the infection of mouth ...