People push your buttons because they know they can, regardless of whether theyâre aware of it. What theyâre looking for is a negative reaction; they want you damaged and on the defensive, for whatever reason.
Back to Top Causes. Horner syndrome can be caused by any interruption in a set of nerve fibers that start in the part of the brain called the hypothalamus and travel to the face and eyes. Sympathetic nerve fiber injuries can result from: 1  Injury to one of the main arteries to the brain (carotid artery).
First-order neurons. This neuron pathway leads from the hypothalamus at the base of the brain, passes through the brainstem and extends into the upper portion of the spinal cord. Problems in this region that can disrupt nerve function related to Horner syndrome include: 1  Stroke. 2  Tumor. 3  Diseases that cause the loss of the protective sheath on neurons (myelin). 4  Neck trauma.