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.
08:30
Scale Explorer
How the Scales are Structured
DATA-BASED USER COHORTS
Who Usually Takes This Test?
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.
Below is a preview of how scores are typically distributed across each scale.
Breathing and Circulation Episodes (BaCE)
Breathing and Circulation Episodes (BaCE)
Average
4.1
Normal range
1.6 — 6.7
min.
0
max.
15
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.
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)
Digestive and Whole-Body Episodes (DaWE)
Average
9.9
Normal range
8 — 11.7
min.
0
max.
15
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.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Skin and Mucosal Episodes (SaME)
Skin and Mucosal Episodes (SaME)
Average
4.9
Normal range
2.5 — 7.2
min.
0
max.
15
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.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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SAMPLE QUESTIONS
Example Questions From the Test
- I have not noticed this.
- It has happened repeatedly or in a recognizable pattern.
- I recall one isolated episode.
- It has happened a few times, without a clear pattern.
- They have occurred once.
- They recur in a recognizable pattern or after suspected triggers.
- I have not experienced this pattern.
- They have happened a few times, without a consistent pattern.
- I had localized itching or a small rash without raised welts.
- I have not had an itchy or swollen reaction like this.
- My lips, tongue, mouth, or throat became swollen.
- I developed widespread raised welts or hives.
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.
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