Welcome

Thank you for your interest in our Casper the Chameleon resource pack—a supportive tool designed especially for children living with Mast Cell Activation Syndrome (MCAS).

Each free pack includes:

• A Casper the Chameleon storybook – A gentle, relatable story about Casper, a chameleon with MCAS, who learns how to manage challenges with the support of his friends.
• Conversation cards – Created with input from a children’s CBT therapist and a play therapist, these cards are designed to help children express how they’re feeling, talk about their symptoms and worries, and explore strategies that may help.
• Yoga cards - Enjoy finding some new ways to move with Casper and his friends.

Together, these resources aim to help children feel understood, supported, and less alone.

At this time, the pack is only available for delivery within the UK.

If you are a Health Professional or Service Provider

If you’re working with a child or family affected by MCAS, please ask them to complete this form themselves if possible. This helps us track where our resources are being used and strengthens future funding applications so we can continue offering support. Please feel free to order a copy or two for your clinic waiting room or display board or get in touch if you would like any further resources.

If you would like to request multiple copies

Please contact us at info@mastcellaction.org

To request your free Casper the Chameleon resource pack, please complete the form below.