Congenital Horner syndrome is a rare neurological disorder that is present at birth. It is caused by a disruption of the nerve pathways that control the muscles of the face and eyes. Symptoms include drooping of the eyelid, constricted pupil, and decreased sweating on the affected side of the face.

The main symptom of Congenital Horner syndrome is a partial or complete Lack of sweating (anhidrosis) on the affected side of the face. Other symptoms may include:

-Drooping of the eyelid (ptosis)
-Smaller pupil (miosis)
-Lack of facial wrinkles on the affected side
-Lack of facial color (pallor) on the affected side
-Lack of facial hair growth on the affected side

Congenital Horner syndrome is caused by a disruption in the nerve pathways that control the pupil and eyelid muscles. This disruption can be caused by a variety of factors, including birth trauma, a tumor, a stroke, a brain aneurysm, or a genetic mutation.

The treatment for Congenital Horner syndrome depends on the underlying cause. In some cases, no treatment is necessary. In other cases, treatment may include medications to reduce the size of the pupil, medications to reduce the amount of fluid in the eye, or surgery to repair the damaged nerve. In some cases, the condition may improve on its own over time.

The risk factors for Congenital Horner syndrome include:

1. Maternal diabetes
2. Maternal drug use
3. Maternal smoking
4. Maternal alcohol use
5. Maternal infection
6. Maternal trauma
7. Maternal exposure to radiation
8. Maternal exposure to certain medications
9. Genetic mutations
10. Birth defects

Yes, there are treatments available for Congenital Horner Syndrome. Treatment typically involves the use of medications such as epinephrine, phenylephrine, and apraclonidine to stimulate the affected eye. Surgery may also be used to correct the underlying cause of the syndrome.