Hi Dear, Welcome to Health Care Magic Team. Understanding your concern about health. Swelling and numbness on the left side as per your query could not be because of facial massage, the main reason for this inflammation or irritation of facial nerve. This nerve supplies areas such as lips, cheeck , neck , head. Inflwmation or nerve impingenent could be due to swollen sakivary gland , bacterial infection , infected tooth and many other reasons and it causes disease known as Bell s Palsy. Your symptoms exactly resembles bell s palsy like numbness of one side of face , facial droooing , unable to blow out while whistleing. I would suggest you to visit dentist nearby you to find out root cause behind your pathology and treatment can be started accordingly. Treatment mainly focus on improving facial muscle functons , although it will resolve itself after some time with some facial streching and muscle excercises like blow in blow out. Building pressure on cheeks. Prednisone corticosteroid is helpful for this. To prevent eyes from drying artifical tears recommended. If root cause is virus infection like herpes then antibacterial medications like Acyclovir is helpful. Hope your concern has bern resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari