<s>[INST] Hello, My neurologist put me on Propranolol . I have pressure in my brain for two weeks. I feel every day . Some times gets very bad. I had CT scan done. It was normal. My blood pressure is normal 115/75 and pulse is 65 . I m afraid to take the drug because I could get low blood pressure and heart rate. [/INST] Hi, Thanks for writing in. Pressure in the brain is called intracranial pressure. This pressure is different from blood pressure but complications due to high blood pressure can cause raised intracranial pressure. The intracranial pressure depends on the flow of cerebrospinal fluid which is surrounding the brain and spinal cord from every side. Increase in intracranial pressure can be due to brain swelling, bleeding within the brain, tumors inside the head and infections causing block of cerebrospinal fluid flow. Propranolol need not necessarily cause increased intracranial pressure. Please discuss with your neurologist. </s>