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

What is wrong with me?

by ElinFiona published 1 day ago
One comment

Have you ever felt a vacuum moving through your arms and legs, like your inner skin are ripped off? This happened to me January 2016. It was extrem...

I'm new to this "weirdo mast disease" (as my allergist calls it).

by happy_tigs published 17 days ago
5 comments

It all started about three years ago when I started having hives all over my body randomly, every few weeks to few months. I chocked it up to stres...

Partners and Patient Groups

RareConnect is a patient-led initiative. Patient organisations partner with EURORDIS, itself an international patient organisation, to create communities and provide moderators from within their network. The following patient groups are official partners of this community.