Michael Schreck, MD Michael Schreck, MD Upstate hand surgeon Upstate hand surgeon Michael Schreck, MD, left, d Michael Schreck, MD, left, d iscusses carpal tunnel syndrome, trigger finger, tendinitis, arthritis and fractures of the hand and wrist. These are the five most common causes of hand pain. He describes each one and how it can be treated. iscusses carpal tunnel syndrome, trigger finger, tendinitis, arthritis and fractures of the hand and wrist. These are the five most common causes of hand pain. He describes each one and how it can be treated.