You are not alone…






Life with MCAS is both physically and mentally challenging. While facebook groups can be helpful, the mission of this website is to facilitate connecting peers on a more personal/tangible level!

The main aim of this website is to connect patients (who have MCAS or think they may have it) to fellow patients as a form of social support in a positive, empowering and individualized nature. Mast Cells United would like to accomplish this in three ways:


1) Social Support Groups in your area. As our database of MCAS patients grows, we will connect patients together by geographical location so that they can meet regularly in person for support groups.

2) 1-on-1 Buddy Program. We aim to pair together patients with MCAS (or those who suspect they have it) to support each other via email and on the phone.

3) Advocacy, awareness & educational events and opportunities. You won’t be spammed, but a few times a year we will share events in your area and opportunities to get involved in being an advocate. This is really important for moving awareness of MCAS forward in mainstream medicine!


Sign up for Social Support resources here!

By submitting this form, you give Mast Cells United permission to share your first name and email with others in the programs that you elect to participate in.


If you’re having issues with the submit button or not getting a confirmation message displayed after you hit submit, try switching devices/web browser. Or you can email: with the information from the form copied and pasted, and we will get you signed up that way! 

Disclaimer: Mast Cells United is not intending to diagnose or treat anyone with the information and resources provided. The Social Support programs are intended to facilitate connecting fellow patients who have MCAS together. Mast Cells United is only responsible for the initial step of connecting consenting individuals together into email contact with other interested members and is not accountable for what occurs beyond that point. 

This content is Copyright © Mast Cells United and the provided information and offered programs should not be used as a substitute for medical advice. Always seek the expertise of a qualified medical professional for personal health questions and guidance in diagnosis and treatment.

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