May have forearm pain although not as common in other median nerve compression syndromes
Weakness of finger flexion (FDL), thumb flexion (FPL), and pronation (pronator quadratus)
Inability to hold a piece of paper between index and thumb fingertips (can't make "OK" sign)
No sensory loss
Anterior interosseous neuropathy
Carpal tunnel syndrome
Posterior interosseous neuropathy
Pronator teres syndrome
Ulnar neuropathy
Long thoracic neuropathy
Suprascapular neuropathy
Radial neuropathy at the spiral groove 