Dilani is a senior consultant psychiatrist ( former lead Psychiatrist with fifteen years’ experience as a psychiatrist at the Austin Hospital, Melbourne). Dr. Wijeratne graduated from Flinders University South Australia. She then completed her internship at Flinders Medical Centre.

She became interested in Psychiatry since she was an intern. She underwent advanced training in adult Psychiatry in several state-of-the-art centers in Psychiatry ( Christchurch Hospital, New Zealand, Royal Adelaide Hospital, South Australia, Northwestern Mental Health Services, Victoria to name a few). She became a Fellow, Royal Australia and New Zealand College of Psychiatrist and took up a consultant Psychiatrist position at Austin hospital in 2007. She remained in this role till March 2022. She is a Fellow, American Psychiatry Association.

She was invited to be an international advisor , Sri Lanka Association for Study of Pain in 2008.She works in adult psychiatry with a special interest in psychosis, mood , anxiety disorders and cognitive behavioral psychotherapy. She is one of the founding members of the Australia New Zealand Headache Society. She is the medical director, Australian Institute of Migraine