Hi. My sister-in-law was in a car accident about 3 years ago. She had what she described as a big goose egg on the left side of her head with a dent in it. It is now getting larger she feels because the dent is deeper, and the left side of her face hurts very bad. She noticed it started hurting when she smiles, coughs, laughs about a month ago. Any ideas, and how emergently should she treat it? Could this be a hematoma? Thanks