Mast Cell Activation Syndrome (MCAS)
MCAS is not unusual in folks with ME or folks with POTS. Me-pedia has an overview page on it.
Lots of information on MCAS, including this incredibly helpful page on medication treatments.
This German page is not the easiest or most updated site, BUT it has the best histamine food list I’ve come across.
Advocacy and Education
An advocacy and support organization
Is a personal blog and resource website that includes recipes.
Mast Cell Activation Syndrome Support (Facebook)