Welcome - Mastocytosis and Mast Cell Activation Disorders Community

What is Mastocytosis and Mast Cell Activation Disorders ?

Mastocytosis is a rare disorder characterized by abnormal accumulations of mast cells in skin, bone marrow, and internal organs such as the liver, spleen and lymph nodes. In the disorders of mast cell activation, mast cells are easily triggered to release their mediators, resulting in many of the same symptoms as systemic mastocytosis.

Source: Participating patient organizations visible below

Mastocytosis and Mast Cell Activation Disorders Resources

More members stories

Latest Member Stories

It's not in my head!

by lwilson2665 published about 1 month ago No comment

I've had my lovely spots for the better part of 15 years. I lovingly call them my Dalmatian spots, as I'm fond of dogs. They didn't bother me,I jus...

Strange symptoms

by kateycox published 4 months ago 2 comments

More than 20 years of allergic reactions with no known cause. finally diagnosed in 2012 with MCAD. My symptoms always start with nausea, progressin...