• Internal Medicine

• Non-communicable diseases
• Infectious diseases
• Organic psychiatric disorders
• Health economics

Journal Articles

Original Articles

• Perera D, Thirumavalavan K, Transportation, storage and injection practices of insulin among patients with diabetes mellitus attending a medical clinic at a tertiary care centre in Sri Lanka; SL Journal of Medical Sciences 2024;1(1): 19-25
• Rodrigo A, Perera D, Eranga V.P, Peris M.U.P.K,  Pathmeswaran A, Road rage in Sri Lanka: prevalence and psychiatric distress; Ceylon Medical J 2015 Sep; 60 (3):86-90 
• Rodrigo A, Perera D, Eranga V.P, Williams S.S, Kuruppuarachchi K.A, The knowledge and attitude of primary school teachers in Sri Lanka towards childhood attention deficit hyperactivity disorder; Ceylon Medical J 2011 Jun; 56(2) 51-4

Case Reports

• Makuloluwa PTR, Hakmanaarachchi TS, Perera D, Dissanayake A, Acute dystonia-induced airway compromise during emergence from anaesthesia: Implications of Propofol and Ondansetron administration to patients with previous neuro-excitatory phenomena: Case report; Sri Lankan Journal of Anaesthesiology 2025 Jan; 33(1) 128-132

• Higgoda R, Perera D, Thirumavalavan K, Multifocal motor neuropathy presenting as a post-infectious complication of dengue: a case report; BMC Infectious Diseases 2018 Aug; 18: 415
• Higgoda R, Perera D, Lokuketagoda K, Thirumavalavan K, Dengue fever manifesting with tetany as the first presentation of primary hypoparathyroidism: a case report;BMC Research Notes 2018 Aug; 11: 588
• Higgoda R. A, Perera D, Lokuketagoda K, Thirumavalavan K, An unusual cause of panhypopituitarism: Case report; Ceylon Medical J 2017; 62:246-7

Abstracts at Scientific Conferences:

• A clinical audit to improve the holistic care of patients with diabetes mellitus attending medical clinics at University Hospital Kotelawala Defence University (UHKDU), Perera GADY, Mahabandara MBHYS, Nadeeshani AU, Adikaram NWAMTA, Perera DN, Munasnghe JM, Lamabadusuriya DA, Edirisinghe EMDT, Jayasekera MMPT, presented at the Ceylon College of Physicians Annual Academic Sessions September 2024
• A challenging diagnosis of Hansens disease (leprosy): presenting as pyrexia of unknown origin with type 2 lepra reaction, Jayasekera MMPT, Lamabadusuriya DA, Perera DN, Perera GADY, Adikaram NWAMTA, Munasinghe JM, Thisera D Poster presentation at Annual conference of Sri Lanka College of internal Medicine (SIMCON 2024) AJIM Volume 3; Supplement 1: November 2024
• A cyclical storm of diabetic ketoacidosis and hypertriglyceridemia induced acute pancreatitis: a case report. Lamabadusuriya DA, Bopitiya AK, Subasinghe SDLP, Perera ADNW, Withanawasam TI. Poster presentation at Annual conference of Sri Lanka College of internal Medicine (SIMCON 2024) AJIM Volume 3; Supplement 1: November 2024

• Gold medal awarded for the best performance in Psychiatry, Final MBBS Examination 2009 – Faculty of Medicine, University of Kelaniya.
• Distinction in Psychiatry – Final MBBS 2009, Faculty of Medicine, University of Kelaniya
• Distinction in Medicine - Final MBBS 2009, Faculty of Medicine, University of Kelaniya
• Distinction in Parasitology – Third MBBS Examination – 2008, Faculty of Medicine, University of Kelaniya

Professional Memberships

• Life member of Ceylon College of Physicians (CCP)
• Life member of Sri Lanka College of Internal Medicine (SLCIM)
• Honorary Joint Secretary of Sri Lanka College of Internal Medicine – 2024
• Council member of Sri Lanka College of Internal Medicine – 2024,2025
• Member of the Scientific committee, Annual Academic Sessions, Sri Lanka College of Internal Medicine, SIMCON 2024 
• Member of ERC (Ethics Review Committee) Sir John Kotelawala Defence University – 2023 to date

Current Position 

Senior Lecturer (Grade II) in Medicine, Department of Clinical Sciences, General Sir John Kotelawala Defence University, Kandawala Estate, Ratmalana, Sri Lanka.

Previous work experience

• Consultant Physician, General Sir John Kotelawala Defence University Hospital, Werahera, Sri Lanka
• Consultant Physician, National Institute of Mental Health – Angoda Sri Lanka. In-charge Consultant physician, COVID 19 treatment centre and Isolation units at NIMH providing specialized care for patients with psychiatric disorders infected with COVID 19 liaison service for psychiatric patients with complex medical co-morbidities including medical emergencies, as in-patient (medical ward) and out-patient (medical clinic) basis. 
• Resident Consultant Physician – National Hospital Colombo, Sri Lanka.
• Acting Consultant Physician – New District General Hospital, Kamburugamuwa.
• Advanced trainee Registrar in Medicine – Flinders Medical Centre, Bedford Park, Adelaide, South Australia.