Ask The Doctor > Pending > Thrush Pending Thrush December 24, 2017Dr. Suneel Sharman M.D.1 min read Patient: What causes trush in the mouth Doctor: Dr. Suneel Sharman M.D. Dr. Suneel Sharman completed his residency in Family Medicine at the University of Toronto. He currently operates Infinity Health Centre, a walk-in-clinic in downtown Toronto. Book Appointment