For the past three years, October 20 means so much more to those familiar with mast cell diseases – specifically Mastocytosis and Mast Cell Activation Syndrome (MCAS).

The Mastocytosis and Mast Cell Diseases Awareness Day aims to raise awareness for the need of better treatments, accurate diagnostics, research and of course, to bring awareness of these disorders that can range from benign to life-threatening. We hope that this day will lift the hopes of mast cell patients.

This year COVID-19 is testing our boundaries of creativity. To help with this creativity, find below a link to the awareness day ribbon and the logo (which is available in multiple languages). If you are doing an activity, craft, etc. send us your photos and we will share them on our Awareness Day gallery and social media accounts. We cannot wait to see how you will show your awareness on October 20.

Share your recognition and awareness-raising activities on social media with the below hashtags and be sure to tag and follow us on Facebook and Instagram.




Download the Awareness Day logo in 16 languages

Our Awareness Day logo was intentionally crafted to include both “mastocytosis” and “mast cell diseases” in the same size font, for equal representation. The mast cell icon depicted has “receptors” and seems to be spilling its contents during degranulation. The color purple was chosen to represent the color of the stain that researchers use in their slides.

The Awareness day logo is currently available in the following languages: Croatian, Czech, Danish, Dutch, English, French, German, Greek, Hungarian. Italian, Norwegian, Polish, Portuguese, Romanian, Slovene and Spanish. Download the Awareness Day logo.

Share your photos with the International Community

Help us increase Awareness of International Mastocytosis and Mast Cell Diseases Awareness Day and our global mast cell diseases community. Share your photos with us for our Awareness Day Photo Gallery and our Facebook and Instagram accounts. Email us your Awareness Day photos (make sure you seek permission from the people in the photos to share the photos with us).

The Awareness Day Ribbon

The Awareness Day ribbon has dots to represent the spots/hives/rashes that many mast cell patients deal with. The purple color represents the color stain that researchers use to identify mast cells.

Global Support

The Awareness Day Committee is expanding the Global Support page on our website to include support groups from all over the world. To have your support group considered, please send us the details of your group via our contact page. Include the group name, a short description of your purpose, website and social media links and a contact name and email address. Submit your support group for consideration.