---
title: FxMed Blog | MCAS
description: MCAS | FxMed Blog
---

# [FxMed Blog](https://www.fxmedresearch.org/blog)

- [MCAS](https://www.fxmedresearch.org/blog/tag/mcas)
- [Chronic Illness](https://www.fxmedresearch.org/blog/tag/chronic-illness)
- [Chronic Fatigue](https://www.fxmedresearch.org/blog/tag/chronic-fatigue)
- [Chronic Fatigue Syndrome](https://www.fxmedresearch.org/blog/tag/chronic-fatigue-syndrome)
- [Fatigue](https://www.fxmedresearch.org/blog/tag/fatigue)
- [Lyme Disease](https://www.fxmedresearch.org/blog/tag/lyme-disease)
- [Brain Fog](https://www.fxmedresearch.org/blog/tag/brain-fog)

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[![Mast Cell Activation Syndrome](https://www.fxmedresearch.org/hubfs/FMRTC%20Blog%20Photos/Mast%20Cell%20Feature.jpg)

Mast Cell Activation Syndrome Mast Cell Activation Syndrome Mast cells are a type of immune cell that originates in the bone marrow and are found in most tissues. They play a role…

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](https://www.fxmedresearch.org/blog/mast-cell-activation-syndrome)

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