The following is an excerpt....
BASICS
Description
- Horner’s syndrome is caused by the interruption of sympathetic nerve supply to the eye, resulting in a classic triad of miosis, eyelid ptosis, and/or absence or decrease of sweating of the ipsilateral face and neck (hypohidrosis):
- Central or preganglionic lesion (complete syndrome)—1st- or 2nd-order neuron
- Peripheral postganglionic lesion (incomplete syndrome, no anhydrosis)—3rd-order neuron
- System(s) affected: Nervous; Skin/Exocrine
- Synonym(s): Bernard-Horner syndrome; Bernard syndrome; Cervical sympathetic syndrome; Oculosympathetic syndrome; Oculosympathetic paralysis; Oculosympathetic deficiency
Epidemiology
- Predominant age: None
- Predominant sex: Male = Female
Incidence
Unknown
Prevalence
Unknown
Risk Factors
- Most common: Apical bronchogenic carcinoma (Pancoast tumor) in smokers
- Aneurysm of the carotid or subclavian artery
- Injuries to the carotid artery high in ...
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