Dear Marlene, I'm sorry to hear about your brother hope this might help you some. Encephalitis is caused by either bacterial or viral means, causing the tissues of the brain and spinal cord to swell. This swelling causes pressure on the brain itself causing increased intercranial pressure. This icp can cause headaches, vomiting, decreased conciousness and even coma. Treatment of encephalitis is aimed at symptom control and prevention of further complications. Antibiotics may be used if bacterial infections are the cause, otherwise anything that can be done to prevent further swelling or pressure, reducing the fever, giving intravenous fluids, keeping the patient calm and quiet, turning and positioning them to keep them comfortable and to prevent the muscles from losing tone. There may be some long term effects after this crisis period is over, such as weakened muscles, seizures. This is a real cut and dried version of encephalitis, its really hard to talk to someone only in words, I'd much rather sit down with you and your family and talk face to face but since I can't please ask your brothers nurses, and physicians to answer your questions. Most nurses will be more than glad to explain and to help you understand, the more you know the better you will be able to help your brother and your family through this tough period. Hang in there! If you want to ask any other questions or just want to talk, you can reach me at [log in to unmask] Connie