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.
Horner syndrome is caused by damage to a certain pathway in the sympathetic nervous system. The sympathetic nervous system regulates heart rate, pupil size, perspiration, blood pressure and other functions that enable you to respond quickly to changes in your environment.
List of causes of Horner's syndrome. Following is a list of causes or underlying conditions (see also Misdiagnosis of underlying causes of Horner's syndrome) that could possibly cause Horner's syndrome includes: 1  Certain nerve disorders (see Nerve symptoms). 2  Spinal cord disorders.