Dr. Wickramsinghe obtain her MBBS degree with 2nd class honors from the Faculty of Medicine Colombo in 2001. She trained in the UK and obtained Certificate of Completion of Training (CCT) in Old Age Psychiatry in 2012. She obtained MSc in Neuroscience from the Institute of Psychiatry, Kings College London in 2012.
She completed MD in Psychiatry in Sri Lanka in 2014. She worked as Acting head/Head of the Department at the Department of Psychiatry in Rajarata University between 2013 to 2021.
She joined Department of Psychiatry, Faculty of Medicine in University of Colombo in 2021 and currently works as a Senior Lecturer in Psychiatry.