Conversation: The conversation between human and AI assistant.
[|Human|] I sustained a head injury a few weeks ago and have severe post concussion disorder and mri shows fluid build up on my brain and over the last few days I ve been constantly dizzy and tired with headaches frequent urination and lower back pain what could be the cause?
[|AI|]  Hi, Thanks for writing in. You might have had a concussion, the mildest form of brain injury. Concussions usually do not manifest into anything serious, however subtle symptoms like brain fog may persist for days to weeks. This happens due to minor injury to nerves and is not visible on imaging. Rarely there can be emotional changes and irritability seen even after concussions. Head injuries need to be observed for the first 24 hours. The following are alarming symptoms (within first 24 hours) of a head injury that needs a doctors' attention.1. Vomiting2. Seizures3. Persisting neurological deficits (numbness is a neurological deficit)4. Difficulty in maintaining gait5. Vision problems6. Increasing severity of headache