Ouch. You part your lips ever so slightly and you’re suddenly reminded of the painful sore in the corner of your mouth. The irritating cracks are medically known as angular cheilitis, a common ...

Cheilitis is an inflammation of the lips that can be caused by sun damage, cosmetics, or saliva. Symptoms of cheilitis include dry, red, painful, scaly, and itchy lips. Cheilitis can lead to second ...