The parts nobody else sees
Living with MCAS (mast cell activation syndrome) means reactions that can come from heat, food, scents, stress or nothing you can name, tests that often come back normal between them, and visits where you try to remember which weeks were bad. Healya is built by people who know what that load feels like.
A reaction can bring flushing, hives, a racing heart and stomach cramps within minutes.
The same food, smell or warm room can set off a reaction one day and not the next.
Blood tests taken between reactions often come back normal, so a diagnosis can take years.
Your numbers already tell a story
Healya connects your reaction episodes, symptom severity, rescue doses, stomach symptoms, what you ate and what changed that day so the story is visible, to you and to your allergist.
Your reaction episodes per month over a year, with the month you moved into the renovated office marked. They sat at 2 or 3 a month for ten months, rose to 5 the month of the move and reached 7 this month, which is the thing to show your allergist rather than explain from memory.
Your symptom severity, 0 to 10, averaged each week over eight weeks, with the week you moved into the renovated office marked. It sat at 3 for the two weeks before the move and has climbed since, reaching 6 in each of the last two weeks.
Rescue doses you logged each month over eight months as bars and as a line, with your last visit with Dr. Ferrante marked. They sat at 2 or 3 a month through that visit and the month after it, then rose to 4 in the month of the move and 6 now, which is a question for the next visit.
Newly diagnosed, years into treatment, or in a month you cannot explain: your reactions are data, and Healya can track them.
How Healya helps with MCAS
A record that counts the reactions for you
A thirty-second check-in, reaction or not, with your symptom severity, any rescue doses and your medicines, taken or missed, so the month's reaction episodes sit on one timeline you and your allergist can read instead of a memory of the worst week.
Reactions next to what came before them
Food, heat, scents, sleep, stress and what changed that day, logged next to each reaction, so a suspected trigger stays a question until the record answers it, for you and your allergist.
A message drafted when you do not want to wait
When a month of climbing reactions is worth more than the wait until the next visit, Healya drafts a message to your allergist's office with the months behind it, for you to send. It never sends anything on its own.
A summary your allergist can scan
A year of reaction episodes, symptom severity, rescue doses and stomach symptoms on one page, with your medicines and the questions you flagged along the way. Fifteen-minute visits go further when the story is already organized.
No wearable required. A thirty-second daily check-in is enough.
Reports written for MCAS
Three kinds, each built from your own record. A summary before every allergist visit. A report on how your months are actually going. And a plain-language digest of new MCAS research, on a schedule you choose.
Questions people with MCAS ask us
Clear answers about what Healya does with your data, and what stays between you and your care team.
Bring your story together
Your reaction episodes, symptom severity, rescue doses and stomach symptoms in one place before your next appointment. Free for a week, no card required.