Do I Have MCAS Quiz

In 10 minutes, see whether recurring flushing, hives, breathing shifts, dizziness, or digestive flares may merit an MCAS discussion. 15 questions help organize symptoms across three body systems for a clear summary to share with a clinician.
Start Online Test
Questions1510 minutes
Hi! My name is Freudly, i am an AI therapist, I will give you an interpretation of the test after you complete it.
08:30
July 22, 2026
July 22, 2026
Material has been updated
112 views
4 completions
5 likes
Verified by Daniel Hall
Psychologist with 25 years of experience
Share
Scale Explorer

How the Scales are Structured

example score
9/15
Breathing and Circulation Episodes (BaCE)
This scale summarizes how often you’ve had episodes involving breathing changes or circulation-related symptoms such as wheezing, dizziness, or a racing heartbeat.
No items marked
Limited signal
Follow-up signal
0NaNNo items marked1NaNLimited signal3NaNFollow-up signal
A score of 9 falls in the Follow-up signal range, indicating multiple reported breathing and/or circulation-related episodes that may be worth discussing in a clinical context.
example score
5/15
Digestive and Whole-Body Episodes (DaWBE)
This scale summarizes how often you report digestive symptoms and broader whole-body episodes that may cluster with other MCAS-like reactions.
No items marked
Limited signal
Follow-up signal
0NaNNo items marked1NaNLimited signal3NaNFollow-up signal
A score of 5 falls in the Follow-up signal range, suggesting recurring or disruptive digestive/whole-body episodes were endorsed, though this is not diagnostic and similar patterns can have many causes.
example score
8/15
Skin and Mucosal Episodes (SaME)
This scale summarizes the frequency and impact of self-reported skin and mucosal episodes such as flushing, hives, itching, or swelling.
No items marked
Limited signal
Follow-up signal
0NaNNo items marked1NaNLimited signal3NaNFollow-up signal
A score of 8 falls in the Follow-up signal range, suggesting you endorsed multiple or more disruptive skin/mucosal episodes that may be useful to discuss in a clinical context, while not indicating a diagnosis.
Start Online Test
just completed the test
DATA-BASED USER COHORTS

Who Usually Takes This Test?

Unexplained multi-system flares
41%OF USERS
People with recurring episodes that affect several body areas at once—like flushing or hives plus stomach upset, dizziness, or breathing changes—who want a clearer symptom snapshot to discuss with a clinician.
Known allergy-like reactions
34%OF USERS
People who have frequent “allergic” symptoms without a clear trigger or with normal allergy testing and are wondering whether mast cells could be involved.
Chronic illness pattern seekers
25%OF USERS
People managing conditions like POTS, EDS, chronic migraines, or IBS-type issues who notice food, heat, stress, or medication triggers and want to organize patterns across systems.
BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.
Benchmarking

See How You Compare

Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.
Breathing and Circulation Episodes (BaCE)
Average
4.1
Normal range
1.66.7
min.
0
max.
15
Majority
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Digestive and Whole-Body Episodes (DaWE)
Average
9.9
Normal range
811.7
min.
0
max.
15
Majority
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Skin and Mucosal Episodes (SaME)
Average
4.9
Normal range
2.57.2
min.
0
max.
15
Majority
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Featured On
CLEAR ANSWERS TO COMMON QUESTIONS

Frequently Asked Questions

What does this quiz screen for?
It organizes recurring episodes such as flushing, hives, breathing changes, dizziness, or digestive symptoms across three body-system areas. It is a symptom self-check to support discussion with a clinician, not a diagnostic tool.
Can the results confirm or rule out mast cell activation syndrome?
No. The scores are unvalidated reflective summaries and are not medical cutoffs.
How should the score and item responses be interpreted?
Use the results to summarize symptom patterns, triggers, and how often episodes occur. Similar symptoms can have many causes, so clinical evaluation is still required.
When should emergency care be sought?
Seek emergency help for throat swelling, severe breathing trouble, fainting, or rapidly worsening symptoms. Do not wait for quiz results if these symptoms are present.
How long does it take and how many questions are included?
Estimated completion time is about 10 minutes. The quiz includes 15 questions.
WHAT THE TEST MEASURES
About This Assessment

Do I Have MCAS Quiz - Symptoms and Signs

Could recurring flushing, hives, breathing changes, dizziness, or digestive episodes warrant a conversation about mast cell activation syndrome (MCAS)? This free symptom self-check organizes experiences across three body-system areas. This quiz is not a diagnosis and cannot confirm or rule out MCAS. Its scores are unvalidated reflective summaries, not medical cutoffs. Similar symptoms can have many causes, so discuss recurring or disruptive episodes with a qualified clinician or specialist. Seek emergency help for throat swelling, severe breathing trouble, fainting, or rapidly worsening symptoms.

Popular tests
Narcissistic Personality Inventory (NPI)
This self-report measure is used to assess narcissism as a personality trai…
Start Test
Yale-Brown Obsessive Compulsive Scale (Y-BOCS)
This measure is used to rapidly quantify the current severity of obsessive…
Start Test
CRAFFT Screening Test (CRAFFT 2.1)
This brief screening measure is designed to identify potential alcohol and…
Start Test
Patient Health Questionnaire-9 (PHQ-9)
This measure is commonly used to quickly screen for the presence and severi…
Start Test
Maslach Burnout Inventory (MBI)
This self-report measure is used to assess occupational burnout symptoms in…
Start Test
Adolescent Anxiety Questionnaire
This measure is designed to support a brief appraisal of anxiety symptoms a…
Start Test
Emotional Creativity Inventory (ECI)
This self-report measure assesses individual differences in the originality…
Start Test
Horne–Ostberg Morningness–Eveningness Questionnaire (MEQ)
Circadian preferences influence typical patterns of alertness and sleep tim…
Start Test
Ambivalent Sexism Inventory (ASI)
This measure is designed to assess attitudes toward women, including both o…
Start Test
Internalized Misogyny Scale (IMS)
This measure is designed to assess internalized negative beliefs and stereo…
Start Test
Perceived Stress Scale (PSS-10)
This self-report measure assesses the degree to which individuals appraise…
Start Test
Impulsive Behavior Scale (SUPPS-P)
Impulsivity is a multidimensional construct that is often assessed with bri…
Start Test
Clinical Institute Withdrawal Assessment for Alcohol, Revised (CIWA-Ar)
This rating scale is used to rapidly assess the severity of alcohol withdra…
Start Test
Positive and Negative Affect Schedule (PANAS)
This measure provides a brief self-report assessment of current or typical…
Start Test
Light Triad Scale (LTS)
This self-report measure assesses prosocial personality tendencies and orie…
Start Test
Suicidal Ideation Scale
In clinical settings, the Suicidal Ideation Scale is used to structure an i…
Start Test
Body Dysmorphic Disorder Scale (BDD-D)
This brief self-report measure is designed to screen for and quantify distr…
Start Test
Beck Anxiety Inventory (BAI)
This measure is a brief self-report inventory used to screen for anxiety sy…
Start Test
Differential Test of Perfectionism
This instrument is used to screen for perfectionism-related attitudes and t…
Start Test
Locus of Control Scale
This measure assesses generalized expectancies regarding the degree to whic…
Start Test
New Apathy Scale
This brief self-report measure is used to screen for apathy-related symptom…
Start Test
Perth Alexithymia Questionnaire (PAQ)
This measure assesses individual differences in alexithymia, including diff…
Start Test
Social Intelligence Scale
This brief self-report measure is designed to support rapid screening of in…
Start Test
Fear Test
This measure is designed to evaluate individual differences in fear-related…
Start Test
Neuroticism Level Scale
The measure is intended for brief screening of an individual’s propensity t…
Start Test
Aggressiveness Indicators Screening Questionnaire
This screening tool is designed to quickly identify behavioral indicators a…
Start Test
Comments
Leave a Comment