This practical handbook gives you the basics of WHY and HOW to use the Perrin Technique to underpin recovery from Long-Covid and restore healthy lymphatic drainage from the brain following Covid-19 infection or vaccination. Bringing together the post-pandemic context, the background science and Dr Perrin's clinical findings, this new book is a clear, concise account of the structural and neuro-immunological problems that can lead to the symptoms of Long-Covid and is ideal for patients wishing to gain an understanding of their complex condition as well as for health practitioners and physical therapists wishing to understand the basics. Through the Looking Glass takes readers through the confusion around what Long-Covid really is and out the other side where it is possible to have a much clearer view of what treatment will work and why.

Raymond N Perrin DO PhD was the inaugural Winner of the Institute of Osteopathy's 2015 Research and Practice Award. He is Honorary Senior Lecturer in the Department of Allied Health Professions, University of Central Lancashire, and a Registered Osteopath and Specialist in Chronic Fatigue Syndrome and now Long-Covid. Treating a patient for back pain in 1989 led him to the concept that there was a structural basis to ME/CFS. He has spent over thirty years researching the medical facts and sifting the scientific evidence related to lymphatic drainage of the brain while successfully treating an increasing number of CFS/ME and, since 2020, Long-Covid sufferers and teaching fellow osteopaths, chiropractors and physiotherapists the fundamentals of the Perrin Technique. He is the author of The Perrin Technique (a guide for practitioners, now in its second edition published in March 2021) and The Concise Perrin Technique (a guide for patients, published in August 2021) as well as being the co-author of some key research papers including Hives et al 2017 (DOI: 10.1136/bmjopen-2017-017521) and Heald et al 2022 (DOI: 10.1097/XCE.0000000000000261). He continues to run clinics in Manchester and London specialising in treatment for ME/CFS, fibromyalgia and Long-Covid.