Living with MCAS

An MCAS symptom tracker for reactions that never quite repeat

A chronic illness tracker and gentle companion that already knows what MCAS can involve — so you do not have to explain it from scratch.

What MCAS can involve

Mast cell activation syndrome involves mast cells releasing their contents when they should not, and the result is a scattered set of symptoms that rarely behave the same way twice. Flushing, hives, itching, abdominal pain, nausea, dizziness, palpitations and brain fog can arrive in different combinations, triggered by foods, smells, heat, stress or nothing you can identify.

That inconsistency is what makes it exhausting to explain. One reaction proves nothing. Dozens, written down as they happened with whatever preceded them, start to show shape. taluvu keeps that record without deciding what caused anything, which matters here more than most places, because the temptation to link a food to a flare is strong and frequently wrong.

How a day can feel

If your days sound anything like this, taluvu was made with you in mind.

  • “It is never the same twice, which is the worst part.”
  • “I reacted to something I have eaten for years.”
  • “People think I am fussy. I am trying not to flare.”
  • “Perfume in a lift can end my afternoon.”
  • “I have a list of safe foods and it keeps shrinking.”

These are the kinds of things taluvu invites you to say in your own words — never a checklist of what anyone “should” have.

What taluvu helps you keep track of

Choose MCAS and it starts you with a palette, not a blank form.

These are things people living with MCAS often want to keep an eye on. Remove any you do not need, add your own, and check in with a few taps on the days you have very little to give.

  • Flushing
  • Hives or itching
  • Abdominal pain
  • Nausea
  • Dizziness
  • Palpitations
  • Brain fog
  • Reactions to foods or smells
  • A journal in your own words, not a score
  • A plain-English week view of what stands out
  • A Doctor Summary you own and can print
  • Your care team’s details in one place

taluvu never claims one thing caused another. It shows what is worth noticing and leaves the medicine to your doctor. See how a check-in works.

A calm, colour-coded week view of someone's health story in taluvu, showing gentle patterns rather than a raw score.

Trusted information and support

Places we point people to for MCAS.

The same sources and communities taluvu links to inside the app. They are independent of us; please check anything important with your own care team.

Information sources

Communities

Questions people ask

MCAS and taluvu, in plain answers.

Short, honest answers about what taluvu does and does not do for MCAS. Nothing here is medical advice.

Is taluvu an MCAS tracker?

Yes. MCAS is built into taluvu with a starting palette of flushing, hives or itching, abdominal pain, nausea, dizziness, palpitations, brain fog and reactions to foods or smells. You can add your own and describe a reaction in your own words.

Can I record what happened before a reaction?

Yes. Every check-in has room for a line, so you can note a meal, a room, a smell or a stressful hour alongside what followed. What you were doing at the time is the detail that is hardest to recall later.

Will taluvu identify my triggers?

No, and it is careful not to pretend otherwise. taluvu notes what repeats in plain words and says clearly that a pattern may be coincidence. It never claims one thing caused another. Identifying triggers is work for you and your specialist.

Can I track MCAS alongside PoTS or EDS?

Yes. Over a hundred conditions are built in and you can choose several at once, which matters here because these three often travel together. taluvu keeps one record across all of them rather than making you switch between apps.

Getting taluvu

Carry MCAS with a little more company.

taluvu is an iPhone app. A membership comes with a free trial, and the price and terms are shown in full before you are ever asked to pay.

Download on the App Store See how taluvu helps See a real Doctor Summary

Other conditions

taluvu understands more than one thing at once.

Over a hundred conditions are built in, including living without a diagnosis yet. Choose as many as apply.

taluvu is not a medical device and does not provide medical advice, diagnosis or treatment. Nothing on this page is a substitute for advice from your own doctor or care team. taluvu helps you organise and describe your own experience — see the Medical & AI Disclaimer.

If you are in crisis or need urgent help, contact your local emergency services or a crisis line. In the UK, call 999 in an emergency, NHS 111 for urgent advice, or Samaritans free on 116 123.