If This Pattern Sounds Familiar, It Might be Time to Learn About MCAS

Can’t sleep. ‘Just poor sleep hygiene.’

Food intolerances. ‘That’s just IBS.’

Lightheaded. ‘You’re just anxious.’

Struggling to focus. ‘Just tired’ or ‘lazy.’

Exhausted. ‘Just lazy’ or ‘complaining.’ 

Mood swings. ‘Must be hormonal.’

Can’t catch your breath. ‘Just out of shape.’

Sneezing, flushing, or itchy. ‘Just allergies.’

Cold hands and feet. ‘Just poor circulation.’

Constant headaches. ‘You must be stressed.’

MCAS symptoms are frequently misinterpreted as unrelated issues, when in reality, those issues can actually be overactive mast cells (type of immune cells) releasing chemicals like histamine that affect multiple organ systems throughout the body. 

MCAS is NOT rare—it affects an estimated 17% of the general population (1 in 6 people). It’s just rarely recognized and diagnosed.

Of course MCAS isn’t always the cause of these symptoms, but it certainly can be. 

Many people with POTS (postural orthostatic tachycardia syndrome) and/or EDS (Ehlers-Danlos syndrome) also have MCAS. 

And no, you’re probably not lazy and it’s not all in your head, even if you’ve been told that before.

PMID: 38003876; PMID: 30794367; PMID: 32328892

Disclaimer: This blog post is for informational purposes only and shall not be construed as behavioral health or medical advice. It is not intended or implied to supplement or replace treatment, advice, and/or diagnosis from your own qualified healthcare provider.