Before seeking treatment, you must seek the diagnosis. Facial asymmetry can be a normal variation or caused by many potential pathlogies 1: soft tissue problems, such as a hemangioma 2: Boney or skeletal problems Seek the advise of a board certified plastic surgeon for proper diagnosis then a treatment plan can be discussed.
Facial asymmetry is common. We frequently see differences in our features when we compare one side to another. Lip asymmetry can be minor and will usually respond to filler. If marked asymmetry is present it may require sugical correction. It is best to discuss this with a plastic surgeon to determine the best treatment for your problem.