Do I Have MCAS Quiz

How the Scales are Structured
Who Usually Takes This Test?
See How You Compare
Below is a preview of how scores are typically distributed across each scale.
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.
Do I Have MCAS Quiz - Description and methodology of the test
People who struggle to reconstruct recurring, unexplained episodes may use the Do I Have MCAS Quiz to create a clearer symptom history for a healthcare conversation. This mast cell activation syndrome quiz prompts attention to timing, possible triggers, duration, and impact, so scattered memories can be recorded in a more consistent way before an appointment.
What This Assessment Explores
This questionnaire is for people examining recurring or episode-like symptoms, possible triggers, and multi-system patterns. Items ask about skin changes, breathing, digestion, fatigue, headache, circulation, fainting, and disruption to normal activities.
The result groups those observations into three dimensions:
- Breathing and Circulation Episodes (0-15) show respiratory or circulatory signals: No items marked (0), Limited signal (1-2), or Follow-up signal (3-15).
- Digestive and Whole-Body Episodes (0-15) show recurring digestive or broader clusters: No items marked (0), Limited signal (1-2), or Follow-up signal (3-15).
- Skin and Mucosal Episodes (0-15) show recurring itching, hives, flushing, or swelling: No items marked (0), Limited signal (1-2), or Follow-up signal (3-15).
As an MCAS symptom quiz, this questionnaire can organize a history for clinical discussion. The bands are reflective, not validated diagnostic or severity cutoffs; a concerning experience matters even if the total is low.
Methodology and Scientific Basis
Each item offers several choices rather than yes/no. The options distinguish absent, isolated or uncertain, repeated, and severe experiences, so the respondent selects the closest description of past events. It reports scores; displayed bands summarize endorsed patterns, while a red-flag response overrides the total.
These are reflective summaries, not norms, diagnostic, severity, or emergency-triage cutoffs. For this MCAS quiz, read results alongside timing, triggers, duration, treatment history, and possible alternative explanations.
Its closest published subject match is Molderings et al. (2006), whose study examined gastrointestinal manifestations in systemic mast cell disease. This questionnaire is conceptually consistent with that work, not a reproduction or validated adaptation. Weiler et al. (2019) and Valent et al. (2012, 2019) supply the consensus and diagnostic framework for suspected mast-cell activation.
As an online self-report tool, it is vulnerable to recall, current context, and differing interpretations of symptom terms. A low score cannot exclude MCAS or another condition, and a high score cannot confirm it. Call emergency services for severe breathing trouble, throat tightness or swelling, blue or gray lips, fainting, collapse, or rapidly worsening symptoms.
- Molderings, G. J., U. Kolck, C. Scheurlen, M. Brüss, T. Frieling, M. Raithel, and J. Homann. "Systemic Mast Cell Disease with Gastrointestinal Symptoms-A Diagnostic Questionnaire." Dtsch Med Wochenschr 131, no. 38 (2006): 2095-2100; 10.1055/s-2006-951337
- Weiler, Catherine R., K. Frank Austen, Cem Akin, et al. "AAAAI Mast Cell Disorders Committee Work Group Report: Mast Cell Activation Syndrome (MCAS) Diagnosis and Management." Journal of Allergy and Clinical Immunology 144, no. 4 (2019): 883-896; 10.1016/j.jaci.2019.08.023
- Valent, Peter, Cem Akin, et al. "Definitions, Criteria and Global Classification of Mast Cell Disorders with Special Reference to Mast Cell Activation Syndromes: A Consensus Proposal." International Archives of Allergy and Immunology 157, no. 3 (2012): 215-225; 10.1159/000328760
- Valent, Peter, Cem Akin, et al. "Proposed Diagnostic Algorithm for Patients with Suspected Mast Cell Activation Syndrome." Journal of Allergy and Clinical Immunology: In Practice 7, no. 4 (2019): 1125-1133.e1; 10.1016/j.jaip.2019.01.006