Why does my mouth go to the side when I talk or smile? (photos)

Please see your physician right away you need a formal evaluation to ensure no nerve or muscular issues.  Best, Dr. Emer.

You should contact your physician to evaluate your medical history and perform an exam.  I would not wait.   

Thank you for your question and I am sorry to hear about your lower lip issues.  Did you only have fillers placed or did you also have Botox three days ago, as your appearance is concerning for a nerve or muscle imbalance.  I would recommend speaking to your injector and showing them your current results.  Based on the treatment method, they can offer you the most likely reason for your lip pulling to the side. 

Hard to say without physical exam, but you may have developed a mild nerve palsy especially since you describe it as sudden onset. See your personal doctor to evaluate the problem. Good Luck

You should immediately consult a neurologist to examine the nerves of your face to explain this sudden loss of movement. Please keep us posted.  Best, Dr. Green