I had Mohs surgery November 2015 - am I still experiencing side effects?

Thank you for your question. 
Typically, during Mohs surgery, nerves are cut which leads to some loss
of sensation in the area.  Nerves take
the longest to heal, up to one year.  The
feeling, or lack of feeling, that you have in the area a year after your
treatment is the feeling you are going to have from here on out.  However, if you are experiencing an itchy,
burning sensation more than a year after your surgery, I would recommend
following up with your board certified dermatologist.  This may or may not be associated with the Mohs
surgery and you will want to ensure that something else is not causing the
irritation, and they may refer you to proper specialist for evaluation.

Tingling and itching after surgery often indicate return of sensation, as sensory nerves grow and reconnect during healing.  These may be positive signs of returning sensation.  I generally discourage scratching, as this can be irritating to the skin and hair; however, pressing on the itchy area may offer the brain a similar amount of itchiness relief, without the irritation associated with scratching.  Check in with your surgeon for a re-evaluation and good luck!