Unfortunately, as a UK-based charity we do not currently have a working knowledge of the US medical system.

However, we hope the following websites may be helpful. 

The Mast Cell Disease Society Inc

Dr Afrin

Dr Demsey

Dr Theoharides

Facebook support groups: 


Mast Cell (“Activation”) Disorders Forum

MCAD (Mast Cell Activation Disorder) & Related Conditions

If you know of other resources which may be useful to the MCAS community living in the US, please let us know so that we can share these.

We wish you all the best in your health journey.

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