The Institute for the Study and Treatment of Pain

iSTOP's role is transitioning to

UBC Gunn IMS Program – Faculty of Medicine
University of British Columbia

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Dr. Chit Chan Gunn

Profile (1931-)

Dr. Gunn is a Vancouver doctor with a world-wide reputation for relieving chronic pain without drugs. A pioneer in the treatment of pain, Gunn is noted for introducing a new theory for chronic pain and also for developing a method of needle treatment known as intramuscular stimulation (IMS). He specializes in alleviating chronic pain due to nerve damage (neuropathy) which is specifically helped by using acupuncture needles for intramuscular stimulation (IMS).


A historic book, Celebration: Chinese Canadian Legacies in British Columbia was publicly released at the British Columbia Legislature on March 13, 2018. It tells the stories of notable Chinese British Colombians and the contributions that Chinese Canadians have made to the history and prosperity of the province.

Government of British Columbia Official Website

Celebration: Chinese Canadian Legacies in British Columbia  

Download page 92     Entire book 180 pages

Attachments area

Reversibility of Chronic Degenerative Disease and Hypersensitivity

Dr. Gunn is cited as a major contributor in the first three volumes of this five volume publication.

"Thanks to all the great anatomists and physiologists of the ages...and many others whose ideas and facts we used liberally to solidify the concepts of hypersensitivity and chronic degenerative disease."

W.J.Rea, K.Patel: Environmental Health Center, Dallas Texas, USA

Reversibility of Chronic Degenerative Disease and Hypersensitivity

Listening in Medicine - Some Canadian Physicians

Michael Livingston

Quote from Book pg 127-132

"We need research and we need heroes."

LISTENING IN MEDICINE - Michael Livingston

Red Maple Legend 2015 - Yan Zhican (Dr. Chit Chan Gunn)

Analgesic experts blending Chinese and Western medicine

红枫传奇 - 颜质灿   Dr. Chit Chan Gunn

Dr. Gunn matriculated at Peterhouse, Cambridge University, and was elected to an Honorary Fellowship of the College in 1997.

Peterhouse Honorary Professorship: Dr Chan Gunn (m.1950)

Gunn Gallery with the Ward Library

Ward Library

Dr. Gunn has endowed the University of British Columbia and the University of Washington with the responsibility of teaching and researching the Gunn IMS model of chronic pain.

Clinical Professor at the University of Washington in Seattle

University of Washington   

Honorary Professor at the University of British Columbia

University of British Columbia


Dr. Gunn's National Honour in Canada

Order of Canada
CC Gunn 2001
      Order of Canada

Member (C.M.) third level of the Nation’s highest honor

Recognizes outstanding contributions at the local or regional level or in a special field of activity.

Dr. Gunn's Provincial Honour in British Columbia, Canada

 Order of BC
CC Gunn 2001
     Order of BC

UW School of Medicine

Online nomination applications forms are informative regarding the Classifications of Honors.

Nominate Someone Canada      Nominate Someone BC


2007 (April) Dr. Gunn was admitted as a Companion of the Guild of Cambridge Benefactors

2007 (July) elected as a Fellow of the Royal College of Physicians in London, UK

iSTOP News


2003 Janet Travell Clinical Pain Management Award

President of the Institute for the Study and Treatment of Pain in Vancouver, British Columbia Canada

Dr. Gunn is the founder and president of The Institute for the Study and Treatment of Pain (iSTOP).

Dr. Gunn Profile on iSTOP's Legacy Website

Through iSTOP, Dr. Gunn initiated a Gunn IMS education program which has trained hundreds of doctors and physiotherapists from all around the world.

International Directory of Gunn IMS Practitioners (trained & certified through iSTOP prior to April 2013). 

iSTOP - CGIMS Directory 

Pain research and IMS education courses transferred to UBC in April of 2013.

Directory of Gunn IMS Practitioners (trained & certified through UBC, since May 2013)

UBC CGIMS Directory

As of December 31, 2019 Dr. Gunn has retired from clinical practice in Vancouver, yet remains active as a supporter of pain research and as a philanthropist. 

His resume highlights his many world travels, lectures, and propagation efforts for pain research and treatment protocol.

Recent Activity    Past Activity (CV)

There are two pain clinics bearing his name: Penang, Malaysia and Vancouver, BC Canada.

Gunn Pain Clinic Malaysia              Gunn Pavilion UBC

Online Open Access Encyclopedia

Wikipedia - Chan Gunn


Most Cited Articles 
Google Scholar

COVID19 Current article of interest

A successful case in treating a respiratory condition in late 1999. Rather than using his favored tool (the needle), in this case Dr. Gunn opted for laser.
Adult Respiratory Distress Syndrome (ARDS) treated successfully with low level laser light therapy (LLLLT)
ARDS Article PDF

Chapter 58: Soft tissue pain: treatment with stimulation-produced analgesia
Publisher: Oxford University Press

Oxford Medicine: Chapter 58 "soft tissue pain"

The Red Book

Dr. Gunn's affectionately referred to as "The Red Book" is prerequisite reading material for the Gunn IMS courses held internationally. Translated into several languages, the book is currently under revision, stay tuned for 3rd Edition!

Book Author: Gunn Approach "Red Book"


Indexing of Dr. Gunn's published and cited works is an ongoing project. Feathers of this pillow have blown internationally, traversing many medical disciplines. Many published works of others stand on the shoulders of a giant.

See inventory of PubMed, Google Scholar, etc.

INDEX of Published Works


iSTOP's role is transitioning to
UBC Gunn IMS Program – Faculty of Medicine, University of British Columbia
For further information and inquiries please visit:

Our gratitude goes out to all iSTOP legacy members and public donors since 1994.

Thanks to you Gunn intramuscular stimulation information resources are freely available to
the public, for patients & their family members, health advocates, pain researchers and enthusiasts alike.

Gunn IMS "points" the way!

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