Use C8 localization difficulty, cervical plexus sensory changes, and EMG-imaging mismatch to avoid mislabeling brachial plexus disease as a root lesion. Document the lesion level and the management step it implies.

C8 localization is often difficult and can mismatch imaging; Cervical plexus injury can cause mandibular and lower ear sensory loss; Upper trunk brachial plexopathy has idiopathic, traumatic, tumor, and radiation causes; C5 or C6 radiculopathy can mimic upper trunk plexopathy; EMG can help distinguish radiculopathy from peripheral nerve disease