Otherwise, the remainder of his past medical history is unremarkable. If necessary, revise your differential diagnosis based on the additional clinical history. The possibility of asymmetric weakness associated with HMSN remains, but would be atypical. Focal neuropathy must be considered. The history of repeated blunt trauma to the forearms is important since this puts the patient at higher risk for traumatic neuropathy.
Entrapment neuropathy is also a possibility.
No other weakness is detected in the upper limbs including the intrinsic muscles of the hands. Muscle stretch reflexes are present though difficult to elicit throughout the upper and lower limbs. Sensation to light touch and pinprick is grossly intact including the radial nerve distribution. At this point, review your differential diagnosis, and revise as appropriate. The various causes of mononeruopathy and the possibility of mononeuropathy multiples must be considered.