| Brachial Plexus Lesion Proximal to White ramus communicantes of T1 (C8) |
| Horner's Syndrome: Ptosis, Myosis, Anhidrosis |
| Lid lag |
| Pupillary constriction |
| Conjunctival hyperemia |
| Loss of head and neck sweating |
| May result from disruption of the sympathetic chain anywhere above C8 T1 |