Sir/madam, in feb 2019 my brother had an accident and suffered from acute head injury. Fortunately, he was saved as doctors had little hope for him. His forehead, was damaged and so the doctor had to remove the portion of the bone in his forehead during the operation. For about 2-3 months there was a csf leak and flowing from his nose but after sometime it stopped. He is still in medication which the doctor told him to take regularly. But after one year again he is having csf coming through his nose. Is it possible that it can come in between? Is it a matter of great concern? He is told by the doctors to take rest and not to move but recently he is riding his motorcycle and doing all day to day activities. He doesn't feel any pain in his head nor any kind of fatigue or nausea.