We have a small team of people dedicated to supporting patients with MCAS and anyone who thinks they may have MCAS. We will expand this team and their resources over time in response to patients’ requests and their experiences.

Patients and their Families

If you have a MCAS diagnosis or suspect that you have MCAS and are in need of help or advice, please email us and one of the team will be able to help you. 

We have a general FB support group, if you apply please check your FB messenger in box or alternatively contact us using the button below.

MCA UK Support

If you are a parent with a child with suspected MCAS get in touch to join our parents support group.


MCA for UK Parents

If you would like us to call you please include your telephone number.

If you are a family member we would like to help you too.

Get in touch

Doctors and Researchers

We hope to be able to support doctors and researchers with an interest in MCAS or those that suspect they may have a patient with MCAS. We will be happy to discuss any ideas or initiatives that require support or funding.

Get in touch


We have published a small brochure that explains the aims of Mast Cell Action and the needs of the MCAS community.

You can read and download it here.

Download PDF

Useful MCAS Research papers
and Videos

The links are from a range of sources, some are free open source documents, and others you can only read the abstracts and need to purchase them.

Diagnosis Treatment Genetics Comorbidities Tests
Informative Videos on MCAS

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. Please click on Data Protection at the bottom of the page to see our Data Protection Information.

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 for sufferers of MCAS.

Make a donation