They are sometimes referred to as your vaginal lips. There are two labia ... There are several factors that can cause your labia to become swollen, including infections, STDs, irritants and allergies, ...

Without enough niacin (vitamin B3) or biotin (vitamin B7), your lips may become swollen or scaly. Insufficient pyridoxine (vitamin B6) intake or absorption can cause cheilosis, marked by scaled lips ...