Triggers

Common MCAS Triggers

People with Mast Cell Activation Syndrome (MCAS) can react to a wide range of stimuli — often things that seem harmless to others. Triggers vary from person to person, but here are some of the most common:

Chemical & Environmental Triggers

-Fragrances & perfumes

-Cleaning products

-Smoke (cigarettes, bonfires, wildfires)

-Pollution

-Pesticides

Food Triggers

-High-histamine foods (aged cheese, cured meats, tomatoes, fermented foods)

-Alcohol

-Food additives/preservatives

-Shellfish

-Artificial sweeteners or dyes

Medication Triggers

-NSAIDs (like ibuprofen or aspirin)

-Opioids

-Certain antibiotics

-Anesthesia

-Contrast dyes (used in medical imaging)

Physical Triggers

-Heat or cold

-Exercise

-Pressure or vibration

-Infections

-Hormonal shifts

Stress & Emotional Triggers

-Anxiety

-Emotional distress

-Lack of sleep

-Overstimulation (noise, lights, crowds)

Important Note:
Not every MCAS patient has the same triggers. What causes a severe reaction in one person may be completely safe for another.

Page updated

Google Sites

Report abuse