question: Hello doctor, A 23-year-old male patient hit with bike accident, fell on back side of head, CT scan reports reveals mild cerebral edema, with some facial fractures, currently patient is having blood clots discharge as post-nasal drip, and not associated with headache, dizziness, seizures, fainting, etc. Please let me know the cause for blood clots discharge as post-nasal drip and is mild cerebral edema complicated?