Dr. Jayaseelan is a Consultant in Anaesthesia and Pain Management at St Helens and Knowsley teaching hospitals NHS trust, United Kingdom. He is the Lead for Interventional Pain Management at the trust and the Faculty of Pain Medicine Tutor. He is also an examiner for the European Diploma of Pain Medicine.

Dr. Jayaseelan provides treatment for chronic non-cancer and cancer pain using a patient centred comprehensive multi-dimensional assessment and following evidence-based pharmacological (medications) and interventional (injections) approaches.

Dr. Jayaseelan performs targeted X-ray-guided and Ultrasound-guided procedures for musculoskeletal, spinal pain and other joint pains, cancer pain, visceral (internal organs) and nerve/neuropathic pain including chronic post-surgical pain, post stroke pain and Complex Regional Pain Syndrome according to Faculty of Pain Medicine standards.