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Harsha Kariyawasam

Consultant in Allergy and Medical Rhinology

, London

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Harsha Kariyawasam: Consultant in Allergy and Medical Rhinology in London

Dr Harsha Kariyawasam is Consultant in Allergy and Medical Rhinology at Royal National Throat Nose Ear Hospital, London and University College London Hospitals NHS Foundation Trust.  With an expertise that covers the disciplines of allergy medicine, rhinology and respiratory medicine, he provides private treatment for allergy, nose-sinus disease and asthma at some of London’s foremost independent hospitals.

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Training and experience

Dr Harsha Kariyawasam graduated from St Bartholomew’s Hospital Medical College, University of London in 1994. Following his general medical training in London, over a seven year period he undertook specialist training in allergy, respiratory medicine and rhinology at the Royal Brompton Hospital. He then went on to complete additional training in airway and allergy disease at the Hammersmith Hospital, general allergy at St Mary’s Hospital and skin allergy at St Thomas’ Hospital.

Dr Kariyawasam was awarded a Clinical Research Fellowship at the National Heart and Lung Institute, Imperial College London, in 2003. His research work on how allergens injure the allergic airways and defining the molecular repair response to such injury lead to a PhD and in 2008 he was awarded the National Heart and Lung Institute’s PhD Thesis Prize in recognition of outstanding research performance.

Dr Kariyasam completed further post-doctoral research training in nasal allergy before taking up his Consultant post at Royal National Throat Nose and Ear Hospital London and University College London Hospital (UCLH), the UK’s internationally-recognised national centre for complex sinonasal disease, in 2008. He was Head of Department 2012-2017 and continues to be Lead Physician for Medical Rhinology.

In 2017, Dr Kariyasam’s clinical and management achievements as Head of Department were recognised when he was awarded a prestigious Clinical Excellence Award by University College London. The award also recognised his outstanding contributions to research and teaching as a Senior Lecturer at University College London Medical School.

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First consultation fee: £325

Follow up consultation fee: £210

Both in his NHS and private work, Dr Kariyasam works within a team structure to ensure patient safety and excellent clinical outcomes. The cornerstone of his practice is exact diagnosis and evidence based best care, training patient to eventually self-manage their care. His areas of clinical expertise are:

  • Allergy medicine
    - general allergy
    - food allergy
    - drug allergy
    - immunotherapy
    - anaphylaxis
    - urticaria
    - angioedema
  • Nasal and sinus disease
    - rhinitis including hayfever
    - sinusitis
    - infection
    - nasal polyps
    - problems of the nose and sinus system
  • Complex/severe asthma
  • Cough
  • Use of vaccines and biologics in allergic disease

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Research interests

Dr Kariyawasam is actively involved in research and teaching with a view to better understanding allergic diseases and problems affecting the nose-sinus system and hopefully one day finding cures. A regular contributor to the academic literature, he is a reviewer for leading respiratory and allergy journals, as well as being an invited speaker at national and international level.

Dr Kariyawasam’s current research interests are:

  • Nasal polyps and Anti-IL-5 therapy
  • Activin-A in severe asthma and mechanisms of immune regulation
  • Aspirin desentisation therapy in nasal polyps and asthma
  • Immune regulation mechanisms in chronic sinusitis and nasal polyps
  • Sublingual immunotherapy (allergy desensitisation) and effects on asthma

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What patients say about Harsha Kariyawasam

I would just like to place on record how helpful and caring both June and Yvonne together with Maria and the rest of the staff and nurses are at the out patients upper deck are on a Wednesday morning. I am also very fortunate to be under the care of Dr Kariyawasam. Who not only understands the problems I have had with my sinuses for many years. But also the connection with my COPD lung problem, Bronchitis. The advice and care he has shown me since I have been under his care, has been truly exemplary. He has helped me to control and manage these medical conditions which are just two of manny. Once again thank you to Dr Kariyawasam and his Wednesday morning team.

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Accreditation and admitting rights

Harsha Kariyawasam is an accredited consultant for the following hospitals, clinics and groups...

Professional details


MBBS, PhD, FRCP, BSc(Hons)

Qualified in 1994 in United Kingdom

Registrations and licensing

  • General Medical Council (GMC)

    Registration no.: 4108232
    Date of registration: 02-Aug-1995

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Memberships and associations

Harsha Kariyawasam is a member of the following professional associations and organisations...

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