Hi Everyone! I'm new to this forum and would appreciate any input. I'm undergoing lots of testing right now, but recently had a positive tilt test with Orthostatic Hypotension. Cardiologist prescribed Midodrine in the short term and am waiting for Northera. I've noticed that on standing my systolic drops, but diastolic raises resulting in very narrow pulse pressure. Pulse rate increase of 30+ as well. When this happens, I feel lots of pressure in my neck & head and usually will have brain fog that lasts for hours. Not seeing much improvement with Midodrine and tends to get progressively worse throughout the day. I'm also getting bradycardia now as well with sitting or lying on Midodrine, which I know is a side effect. The narrow pulse pressure was happening before Midodrine as well. I am drinking water, adding salt, compression socks, raised head of bed, avoiding heat, etc. The narrow pulse pressure with increased diastolic seems to be what makes me feel yuck... I've read narrow pulse is caused by few things such as low blood volume, cardiac issues, etc. Hoping someone may have some insight.. Thanks!!