“I almost started to doubt myself.”
For Maria Elena, the first signs of mast cell activation syndrome (MCAS) appeared gradually and unpredictably. What began as seemingly unrelated symptoms developed into years of searching for answers, visiting specialists and trying to understand why she continued to feel unwell despite medical tests showing no obvious problems.
Her story highlights the challenges of living with a condition that can be difficult for others to recognise and the emotional toll of having symptoms repeatedly dismissed.
Unnoticeable. Unmistakable.
A confusing and unpredictable beginning
Maria Elena describes the onset of her symptoms as slow and confusing, with different reactions appearing and disappearing without a clear pattern.
Some days she experienced drops in blood pressure or sudden flushing. At other times, she developed unexplained itching or began having difficulty tolerating certain medications.
She also noticed reactions after eating breakfast, including dizziness, sweating, light-headedness and an intense sensation of internal heat.
The unpredictable nature of these symptoms made it difficult to understand what was happening to her body.

Years of searching for answers
As her symptoms continued, Maria Elena visited numerous specialists, but investigations repeatedly came back within normal ranges.
Despite being reassured that nothing appeared to be wrong, she continued to feel unwell.
This went on for years, not weeks or months. Without an explanation for her symptoms, Maria Elena began questioning her own experiences and wondering whether she might somehow be imagining them.
Her journey reflects the uncertainty and emotional strain that can accompany a long search for answers.
Living in a constant state of alert
Today, Maria Elena describes MCAS as a chameleon-like condition because of the way symptoms can change and remain hidden from others.
She may appear healthy and well, even when it takes considerable effort to present herself that way. Feeling well at one moment doesn’t guarantee she will feel the same a few hours later.
The impact on her everyday life has been significant. She has had to stop working full-time because of her physical symptoms and now spends much of her day trying to avoid situations that could make her unwell.
This constant need to anticipate and manage potential reactions is exhausting.
For Maria Elena, the emotional impact is equally difficult. Feeling dismissed, disbelieved or misunderstood can lead to isolation, adding another layer to the challenges of living with an unpredictable condition.
Every story matters. Share yours.
Like Maria Elena, many people living with mastocytosis, MCAS and other mast cell diseases face challenges that others may not see or understand.
By sharing your experience, you can help raise awareness, build understanding and remind others that they are not alone.
Your story deserves to be heard.


