Image: Hope for sufferers

Mast Cell Action's film about MCAS, created for the BSACI 2020


Image: Patient's Story

Learn more about our Casper storybook


We have developed a series of wellbeing resources  available to download for free


Welcome to Mast Cell Action

Mast Cell Action was founded in 2016 by a small group of people who had been affected by MCAS. Founder and Trustee, Gawain Paling, was desperately searching for help but realised there was a huge void for those living with MCAS. He approached 2 friends - Jennie Shellard and Chris Wood who united to create Mast Cell Action. 

Mast Cell Action is determined to offer support to the mast cell disease community, their families, doctors and researchers. To raise awareness of disorders resulting from mast cell activation, increase vital research in this area and strive for better diagnostics and treatment.

We are a small but very enthusiastic team dedicated to improving lives for everyone affected by MCAS. 

"The complete vacuum of understanding and support within the medical system convinced me something needed to be done, so when I was approached by Gawain and Jennie, I was happy to join them in founding MCA. My background is one of branding, design and communications so I was able to help in the initial stages of sorting a name, branding, website and so on. I was subsequently volunteered to raise some money which led to undertaking two walks of the Thames along with 15 different dogs (another story!)" Chris Wood, Trustee

Our mission

Our Mission

Mast Cell Action's vision is of a world where everyone affected by Mast Cell Disease has their symptoms acknowledged and experiences listened to, to achieve a correct diagnosis, and to receive the care and support that they need.

Our charitable objective is to improve the lives of people affected by Mast Cell Activation Syndrome.

Postcode Places Trust

We are delighted to have received an award from Postcode Places Trust, a grant-giving charity funded entirely by players of People’s Postcode Lottery. Find out more here The Postcode Places Trust and People Postcode Lottery.

This grant will allow us to develop a pack to provide practical support to people affected by MCAS as well as leaflets to share with medical professionals, explain MCAS to others and a school resource to help parents and carers to communicate with childcare settings. Thank you to the players of Postcode Lottery.

Logo: Genetic Alliance UK

Mast Cell Action is a member of the Genetic Alliance.

Become a friend

Sign up to become a Friend of Mast Cell Action so we can keep you up to date on our progress and on how to get involved in our latest campaigns and initiatives. 

Become a friend


Mast Cell Action relies entirely on the generosity of people like you. Please make a donation now and together we can make a difference to those affected by MCAS.

Make a donation