Original Article Sympathetic Hyperactivation as an Alternative Treatment of Orthostatic Hypotension in Parkinson’s Disease: an Initial Report of an Ongoing Randomized Control Study Thanawat Chungtanawiwat, Parnsiri Chairangsaris Blood pressure (BP) that drops further following a shift in upright position is known as orthostatic hypotension (OH). This condition is generally common in elderly people... ตุลาคม - ธันวาคม 2567