Isolated single digit Porokeratosis of Mibelli: an unusual case.

Porokeratosis of Mibelli is an uncommon dermatosis, which may be associated with immunosuppression and which may undergo malignant transformation. We report a patient with a chronic history of a skin lesion of his right 5th finger that was histologically confirmed to be Porokeratosis of Mibelli. Although it commonly affects the extremities, the isolated involvement of an individual digit of the hand has not been previously reported.

Longitudinal sliding of the median nerve in patients with non-specific arm pain.

In patients with non-specific arm pain (NSAP; also known as repetitive strain injury), there are clinical signs of altered median nerve sliding. It is possible that a restriction along the nerve course will lead to abnormal increases in local strain during limb movements, possibly contributing to symptoms. The present study uses ultrasound imaging to examine median nerve sliding through the proximal and distal nerve segments in 18 NSAP patients.