Symptoms of Horner syndrome include drooping of the upper eyelid, miosis, decreased sweating on the affected side or entire face, and constriction of the affected pupil in dark environments, states Mayo Clinic. Uncommon difference in size of the pupils and elevation of the lower eyelid may also signal that a person has Horner syndrome. Symptoms mostly occur on one side of the face.
Children with Horner syndrome experience decreased iris color, notes Mayo Clinic. Reactions to emotions, physical strain and heat may cause flushed cheeks in such children. Unexpected Horner syndrome symptoms and symptoms that exhibit after a traumatic injury require a medical emergency. Immediate medical attention is also necessary for a patient who experiences dizziness, vision problems, unexpected headache, muscle weakness or loss of muscle control.
The condition occurs as a result of damage to the sympathetic nerve pathways to the face and eye, according to Mayo Clinic. Stroke, neck trauma, tumor of the myelin sheath, lung cancer and migraines may cause the damage.
A medical examination may help provide diagnosis, reports Mayo Clinic. The doctor may apply certain eyes drops to the affected, and compare it with the good eye. Diagnosis for children includes urine and blood tests. Computed tomography scans, magnetic resonance imaging and X-rays may help examine the nervous system to know the damaged part. There is no particular treatment for Horner syndrome; however, treating underlying causes may help counter the problem.