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 |