MRI 4 mnth ago 3 sm central herniations C4-C7. Recent onset of const. Numb middle finger pad. Nerve pn arm. Likely from herniation or carpal tunnel?

Good question! and the answer may be obtained with an EMG/NCS a study of the muscles and nerves in your upper extremity. Clinical examination may also provide clues. Start with your PCP (Primary Care Provider) who may want to refer you to a specialist. Hope this helps Dr Z.