Hello, As your CT scan is normal, It s not much worrisome. The skin over the scalp and forehead is loose. Hence, the superficial blood or edema can spread to dependent areas. For example, when a boxer gets hit on the side of his head, he can still wind up with raccoon eyes or periorbital hematoma. If you have blurring of vision, intense headaches or vomiting, do visit your nearest hospital. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Pranav Balakrishnan