Have you ever found yourself in the middle of a mast cell flare up wondering what to do next? If you have Mast Cell Activation Syndrome (MCAS), it’s likely this sounds familiar. 

Or maybe you wish you could get a step ahead of flares? 

I’ve been in these situations, too. 

Over the years, I’ve learned how to calm mast cell flares before they get out of control. 

And I’ve learned how to lessen my reactions by planning ahead. 

But I’m human. I make mistakes. 

I recently had some setbacks with my health. I’ll tell you more in a moment. 

First, I want you to know that I’m sharing this because I want to give you hope. I want you to know if you have setbacks, too, that doesn’t mean you’ll never be well again. 

We all make mistakes sometimes.  

You might run out of supplements for a few days. You might not pay attention to your symptoms. You might eat too many triggering foods. You might get ill. 

Any of those can cause an MCAS flare.  

And that’s why having a mast cell flare plan is so important. 

Keep reading to learn how I’m recovering from my mistakes and learn more about:  

• What is an MCAS flare?
• What is a flare plan?
• Why should you make a flare plan?
• How to customize your flare plan to your needs
• How to talk with your provider about flare plans
• Top flare plan recommendations
• My personal flare plan

What Is an MCAS Flare Up? 

It’s important you know that this blog post is for informational and educational purposes. It’s not meant to treat any health condition or to be prescriptive for anyone.  If you have any medical condition, it is critical you work under the care and guidance of a licensed medical provider. 

Your mast cells are an important part of your immune system. 

But if you have Mast Cell Activation Syndrome (MCAS), you have haywire mast cells. 

MCAS can result in overly sensitive mast cells. In other words, you may notice reactions to things that aren’t a problem in people without MCAS. This might be things like fragrances or certain foods. 

Your mast cells may also not “shut off” even once a real threat, like a virus, has been dealt with. 

Your mast cells release mast cell mediators when they are triggered. 

When mast cells release those chemical mediators, the process is called mast cell degranulation. It’s what causes your symptoms. 

The definition of flare up in MCAS is when your symptoms increase due to exposure to mast cell triggers. 

Symptoms range widely. And they can affect different organ systems.  

You may see new symptoms. Or you may see worsening of existing symptoms. 

Some common triggers that might set off an MCAS flare up are: 

• Mold exposure 
• Allergens (like pollens) 
• Wildfire smoke 
• Tick / mosquito bites 
• Animal bites with venoms 
• Injuries or illness (virus, food poisoning, parasites, etc.) 
• Medical / dental procedures 
• Stress 
• Pollution 
• Fragrance  
• Dietary triggers 
• Getting too hot or too cold 
• Not keeping up with your healthcare protocol 

Here’s what led to my latest flare up: 

• I got a concussion
• I had 2 major mold exposures 
• I slacked on taking my meds (I was supposed to be regularly using an antifungal nasal spray for the fungal colonization I got from mold exposure)
• I ate sugar every day while traveling for about a week (This worsened the sinus fungal colonization by providing food for the fungi to thrive)
• I was under a lot of personal stress 
• I was traveling for medical treatments 
• I had anaphylaxis from mold and fragrance exposures 
• I had intense osteopathic work and prolotherapy injections to help with the pain from the concussion  

And I didn’t follow my flare plan. 

Like I said. I’m human and make mistakes. 

So, why didn’t I follow my flare plan? 

My MCAS Flare Up Mistake 

I was in denial. It’s one of my coping mechanisms. I rationalized everything instead of paying attention to my warning signs. 

For example, my red and swollen hands? That must be because I was reintroducing some higher histamine foods. I thought I’d just overdone it. 

And I was in so much pain from the concussion. It led to increased jaw instability, muscle spasms, and nerve pain. This was because of the extent of my ligament damage from previous injuries. 

The pain took over. 

The good news is that the osteopathic work and prolotherapy provided me with some much needed pain relief! 

But I was still ignoring pressing symptoms… until I couldn’t anymore. 

My sinuses felt like they would explode. I started having chronic migraines. My hands continued to be red and swollen. I had bad joint pain that felt like an arthritis flare. 

My skin was stretchy, and I dislocated a joint in my big toe just by stubbing it. That meant my hypermobility had returned. I’d previously dealt with Hypermobile Ehlers-Danlos Syndrome (EDS). But I had completely reversed it. 

Additionally, I noticed exacerbation of my EMF sensitivity.  

You might also experience MCAS symptoms in your flare ups like: 

• Systemic symptoms 
  • Overall fatigue 
  • Chronic pain 
  • Increase in food or chemical sensitivities 
  • Inflammation 
• Skin symptoms 
  • Rashes  
  • Hives 
  • Itchy skin 
  • Urticaria 
  • Eczema 
• Gastrointestinal symptoms 
  • Abdominal pain 
  • Cramping 
  • Bloating 
  • Diarrhea  
  • Constipation 
  • Reflux 
• Nervous system symptoms 
  • Anxiety  
  • Depression 
  • Brain fog 
  • Insomnia 
• Heart symptoms 
  • Fast heart rate 
  • Low blood pressure 
  • Fainting 
• Respiratory symptoms 
  • Congestion 
  • Shortness of breath 
  • Sinus or nasal swelling 

Related Article:  Do You Have More Than Just Histamine Intolerance? Take the Mast Cell Activation Syndrome Symptoms Survey 

If you catch flares early, you can often calm them down quickly before you end up with a severe flare up. For some people, mast cell flare ups can calm within just a few hours or days. 

But even if you let your flare progress to the advanced stage I did, a flare plan can still be extremely helpful. 

So, just what is a flare plan and why should you make one?  

What Is a Flare Plan? 

Think of a flare plan kind of like you would a natural disaster plan. 

For example, if your area is prone to tornados, you want to prepare BEFORE a tornado ever hits. 

You’ll want to know where to take shelter. You’ll also want to have a kit with emergency essentials ready to go. Checklists may also be helpful.  

In the moment, things can get chaotic! If you have a checklist and a kit prepared, all you need to do is grab your kit and checklist. Then you just check everything off.  

Related Article: Low Histamine Disaster Prepping for Mast Cell Activation Syndrome and Histamine Intolerance 

When you are in a mast cell flare, it’s very much the same.  

Your mast cell flare plan is your list of safe: 

• Supplements 
• Nervous system supports 
• Medications
• Action steps 

You can use this when you first start noticing you’re in a flare up. 

Or you can use this BEFORE a flare if you know you’ll be exposed to mast cell triggers. 

For example, I know that medical procedures can cause mast cell activation. So, before I underwent the prolotherapy injections, I could have gotten ahead of my reactions by following my flare plan and bumping up my mast cell supports. 

Here is why. 

Why Should You Make a Flare Plan? 

Like me, you might not be thinking clearly when you are in the middle of a flare. 

Flares can affect your mental health and your ability to make any decisions at all. Let alone good decisions.  

Having a clear plan already written up can help you when you feel too bad to make good decisions. 

You should print out your flare plan on a piece of paper. You can even keep it in a page protector to help keep it safe. 

Keep it in a memorable place like your medicine cabinet. 

It is better to have a printout than to rely on an electronic file. It’s often easier to access a piece of paper in your drawer or cabinet if you are sick. And if you need someone to get it for you, they won’t need to know passwords or where to find your file. 

You’ll also want to do some prepping by knowing what supplements and medications are on your list so you can keep extra on hand to use as needed. 

TIP: Keep all your emergency medications and supplements in one easy to access spot. You don’t want to hunt them down in the middle of a flare. And if someone needs to help you, they’ll be able to find them easily, too. This is particularly important if you need an EpiPen or inhaler to help with symptoms. 

Also, if using an EpiPen is new to you, talk with your doctor about how to use your Epi tester. You want to know exactly what to do BEFORE you really need it. 

Do you have a list of emergency contacts handy? Don’t rely on your phone. If someone needs to make calls for you, they may not be able to access your phone contacts. 

And it’s good practice to let others around you know how to help you in case of emergency. 

Let family or friends know where you keep your emergency meds like your EpiPen. Let them know how to use it in case you aren’t able to administer it yourself. And let them know where you keep your supplements and medications. 

You may want to go ahead and let someone know you may need help at the onset of a flare. It might not be bad to start. But that way someone else has a head’s up in case you spiral downward quickly.

When To Start Using Your Flare Plan 

Normally, I would use my flare plan when I first started noticing symptoms. Or when I was anticipating mast cell activation like from medical procedures.

Over the years, it’s helped me feel better faster. 

When I didn’t use my flare plan right away, my symptoms got worse and worse. 

My flare plan was still extremely helpful even though I let my symptoms get so bad. See, at that point, brain fog was keeping me stuck. I needed to be on autopilot as much as possible. 

I got out my flare plan and started following it to the letter. 

It kept me from spiraling completely out of control with my health.  

Thanks, past me, for being calm, collected, and prepared! 

Not everybody’s flare plan looks the same. I’ll share my personal flare plan with you to give you an idea. And you’ll read about my top flare plan recommendations. 

But you’ll want to use these as ideas to consider. You’ll still need to put together something that’s right just for you. 

Here are some tips on how you can do that. 

Customizing Your Flare Plan 

A symptoms and changes journal can be a good place to start putting together the picture of your health. 

A symptoms and changes journal can help you: 

• Pinpoint triggers 
• Identify what you tolerate best 
• Discern what dosages are best for your needs 

Your journal can be simple and take only about 1 minute a day.   

In the Mast Cell 360 practice, our clients don’t list their entire protocol and all symptoms each day. Just list any changes happening and whether any specific symptoms improved or worsened. 

You can also list when you: 

• Add or stop a new supplement or medication 
• Increase or decrease dosages 
• Add a new food 
• Dine out 
• Travel 
• Anything that may affect your health 

This helps provide a baseline of information for you to help you see what works for you. From there, you can use this information to customize your flare plan. 

Talking With Your Provider About Flare Plans 

You’ll read about my top flare plan recommendations next. You can use these ideas to talk to your provider to help determine what’s right for you. 

Talk with your provider to see if these options are right for your flare plan: 

• Increasing medications 
• Taking more supplements 
• Dosing that is appropriate for your needs 

Your practitioner knows your health history and can help you avoid life threatening drug interactions or even just uncomfortable side effects.  

That’s why it’s so important to talk this over and create your plan when you are in a good place.  

You don’t want to make split second decisions when you are flaring. You may not be thinking clearly. 

Here are some things to consider and to talk with your practitioner about. 

Top Flare Plan Recommendations 

Get medical advice whenever you have new or worsening symptoms of any kind. 

You want to rule out anything serious. 

If you have an emergency, call 911. 

Contact your medical practitioner for non-emergency medical concerns. 

If you have an idea of what caused the flare, pause whatever that was. If you think it was food, take a break from that food. If you think it was a supplement, pause that until symptoms calm back down.  

Proceed more slowly when you do restart. 

Here are some of my top action step tips for flares. You’ll read about my top supplement recommendations next. 

Action Steps for MCAS Flare Ups 

Here are a few simple steps you can take to help recover from MCAS flares faster. 

Drink Extra Water 

Staying hydrated is important for good health in general.  

Water plays a big part in flushing toxins from your system.  

Just make sure your water isn’t adding to your toxic load! 

Related Article: AquaTru Water Filter Review

Get Extra Sleep 

Take naps throughout the day. Get more sleep than usual. 

Cut back on physical activity. 

Rest. 

Sometimes doing nothing is the most you can do! 

Sleep is an important part of healing! But if you can’t sleep, even just laying down without stimulation can help your body. 

And you can find some ideas to help improve sleep issues from MCAS here.

Avoid Stressors 

Anything that causes stress is going to increase mast cell activity. 

Do what you can to limit your stressors. Try to avoid traffic. Turn off the latest news for a few days. You get the idea. 

And don’t be afraid to reach out if you need help. Sometimes this is hard to do. But when you are in a good mental place, make note of the people you can really count on. 

Maybe your neighbor can help you walk your dog if it’s hot and the heat is triggering you. 

Or maybe someone can pick up your groceries the next time he or she’s at the store so you can avoid exposure to chemical fragrances. 

Remember the time you drove the neighbor kids to school when their mom was sick? She’s probably more than happy to return the favor. 

Increase Time Doing Nervous System Supports 

One of the first steps Mast Cell 360 clients take toward getting their health stabilized is introducing nervous system supports into their protocol. 

Work with both the vagal nervous system and limbic system. You need both to help get your body into the parasympathetic state also known as rest, digest, and heal. 

It’s in this state that you’ll be able to get your mast cells and reactions calmed down. 

You can learn more about the top nervous system supports for each level of healing in the Mast Cell Nervous System Reboot here:  

In the course, you’ll be guided through building your own roadmap of supports for your needs. 

Right now, I’m exploring a new program which will get added to the course in the near future.  

It’s called Primal Trust Academy. It’s a brain retraining program that helps with vagus nerve toning AND the limbic system. 

>>> Use coupon code MASTCELL360 for 5% off your first month!

Eat Cleanly 

Eating lower histamine during a mast cell flare can help calm the mast cells. 

Mast cells release histamine. Histamine stimulates the mast cells. It can become a vicious cycle.  

If your histamine load is high or if you have Histamine Intolerance, eating a Low Histamine Diet can help get your histamine levels down and curb that mast cell response. 

And if you are having gut issues as part of your flare, consider liquid foods to help reduce gut symptoms. 

This might include purees, blended soups, and smoothies. Here are some recipes to get you started:

• Chicken Ginger Low Histamine Soup – Low FODMAP, Low Oxalate, and Low Lectin 
• Low Histamine Cherry Smoothie – Low Oxalate and Low Lectin
• Low Histamine Roasted Carrot and Pear Soup – Low Lectin with Low Salicylate Option
• Mango Basil Low Histamine Smoothie – Low Oxalate and Low Lectin
• Low Histamine Leek and Fennel Soup – Low Lectin, Low Oxalate, and Low Salicylate

Depending on your needs you can see my recipes by clicking below:  

• Low histamine recipes  
• Low oxalate recipes  
• Medium oxalate recipes 
• Low lectin recipes  
• Low salicylate recipes  
• Low FODMAP recipes 

Another action step you can take is to increase supplement supports and medications, as tolerated. 

Here are a few options to talk with your provider about. 

Supplements to Consider Adding to Your Flare Plan 

Ideally, you’ll want to test all these supplements BEFORE you have a flare.  

During a flare isn’t the time to start new supplements. Especially if you have a history of sensitivities. 

You don’t want to make your flare worse by taking something you aren’t going to tolerate. 

And trying these before you have a flare will help you get a baseline idea of what you can tolerate.  

And if you have MCAS, mast cell supporting supplements may help you on a regular basis, too. You may be able to take these regularly and increase during a flare for maximum benefits.  

This first one is so simple and so easy to come by you might already have it in your house. Baking soda. Just be careful to only ingest from a new package. 

Bicarbonates 

Baking soda is a bicarbonate. Bicarbs work as an indirect mast cell stabilizer. They work by modulating a mechanism that controls inflammasome production. It causes inflammation and can drive more mast cell activation. 

These 3 bicarbonates may be helpful in a flare (if tolerated): 

1. Baking soda (sodium bicarbonate)  

2. Ph Adjust bicarb formula 

3. Potassium bicarbonate 

If you are very sensitive, you might want to start with just a sprinkle. Some people do ok with ¼ teaspoon in 8 ounces of water on an empty stomach up to 3x/day. 

You want to take this on an empty stomach because bicarbonate buffers stomach acid. Stomach acid is important for good digestion, so be sure to take this between meals. 

Here are 2 tips when it comes to bicarbs. 

1. Avoid baking soda if you have high blood pressure. Try potassium bicarbonate (above) instead.

2. With low blood pressure, add ½ teaspoon unrefined sea salt (Redmond Real Salt).  

Electrolytes 

Electrolytes are essential minerals needed for your body to carry out key roles. 

The top 3 electrolytes are: 

• Sodium 
• Potassium 
• Chloride 

You may need a boost in electrolytes if you have Irritable Bowel Disease (IBD). 

IBD has been associated with MCAS. And you may see an increase in IBD symptoms during an MCAS flare. 

Your mast cells and mast cell mediators can affect electrolyte absorption in your gut if you have IBD. 

That means you may not be getting what you need for your body to function properly. This may cause an increase in gut related symptoms. Concentrace is an electrolyte blend you can consider adding to your drinking water. 

Start slowly with Concentrace if you haven’t tried it before. If you are sensitive, you may not be ready for a combination product like this yet. 

You may want to try one mineral like potassium to start.

DAO (Diamine Oxidase) Supplements 

Diamine oxidase (DAO) is a histamine-degrading enzyme that your body should naturally make.

Learn more about Diamine Oxidase (DAO) for Mast Cell Activation Syndrome or Histamine Intolerance here. 

However, you might not be making enough of it to keep up with your histamine load. Or you might be making enough, but you don’t have enough of the cofactors needed to make it active.  

For example, vitamin B6 and vitamin C are important for making DAO active and usable by your body. Make sure you get a low histamine vitamin C! 

I formulated this diamine oxidase that is generally well tolerated by those with Mast Cell Activation Syndrome. And it even has some B6 in it already to help make it more bioavailable.  

Mast Cell Supporting Supplements 

You can learn more about the top mast cell supporting supplements we use in the Mast Cell 360 practice in my Top 8 Mast Cell Supporting Supplements Master Class.

I’ll let you know about 2 of them right now, though. Both have been shown to have mast cell supporting properties. 

1. Alpha-Glycosyl Isoquercitrin form of Quercetin  

Read More: Health Benefits of Quercetin

2. Perimine 

If you are hypersensitive, you may want to microdose with this perilla seed extract.  

Perimine (perilla seed) has also been shown to have antihistamine properties as well. 

Read More:  Why Perilla Seed Extract is the Mast Cell Supporting Supplement You’ve Never Heard About

Gastrointestinal Supporting Supplements 

You’ll want to work with your provider to see what gastrointestinal (GI) supports might be right for you. If you have diarrhea or constipation, your recommendations may be different. 

3 GI supports I like are: 

1. Magnesium Oxide  

2. Holozyme Digestive Enzymes

>>> Use this link to automatically use coupon code MASTCELL360 and save $15 off your first Healthy Gut order!

3. Betaine HCL like HCL Guard+

>>> Use this link to automatically use coupon code MASTCELL360 and save $15 off your first Healthy Gut order!

Sleep Supports 

Remember that one of the best action steps you can take during a flare is getting more sleep. 

But with MCAS, you may be dealing with some sleep issues. 

Fortunately, there are some supplements that can help with this. 

You can learn more about Sleep Supplements for Mast Cell Activation Syndrome & Histamine Intolerance here.

Medications 

Another good reason to make your flare plan with your medical provider is that they may be able to recommend medications that may help. 

Your licensed medical provider may also recommend increasing: 

• Antihistamines including H2 blockers 
• Mast cell stabilizing medications  
• Mast cell stabilizing supplements 

 
Related Article: The Best Antihistamine for Histamine Intolerance and Mast Cell Activation Syndrome

My Personal Flare Plan 

Here’s what’s on my flare plan. You can use this as a starting point for ideas on how to create your own flare plan.  

• Symptoms to watch out for 
• Favorite safe foods 
• Which foods can be blended for a smoothie 
• Note to increase water consumption 
• Detailed list of supplements and medications to increase 
• Nervous system supports to do 
• Troubleshooting tips for your top flare symptoms 

I have a list of flare symptoms to watch out for. 

I tend to get inflammation as one of my first warning signals. For instance, my hands often swell and turn red. 

If I notice an increase in joint pain or gastrointestinal issues, or I start experiencing more headaches or fatigue, these are my first alerts. 

My flare plan also includes a list of foods I can safely eat. As I’ve improved my health over the years, I’ve been able to reintroduce many foods back into my diet. 

I can eat some high histamine foods in moderation. I can eat some FODMAPs in small portions again, too. 

But when I’m flaring, I want to stick to foods I know won’t cause any issues. 

So, I have a list of my favorites that are easy to prepare. I don’t want to have to look up how much of an apple or garlic might be low FODMAP.  

Remember, the flare plan is meant to make your life super easy when you might not be able to use your best judgement. 

I also make a note to myself about which foods can be blended nicely together to make an easy smoothie. 

I have a note to myself to increase my water consumption. 

And I have a detailed list of my best tolerated supplements and medications to increase during a flare. 

I’ve also outlined what nervous system supports work best for me and how much extra time I can typically tolerate if needed. 

And because sleep is sometimes an issue for me when I’m flaring, I have notes on what has worked for me in the past to help when I’m having trouble sleeping.  

I also have notes on what to do if I have trouble with constipation or diarrhea. 

You’ll want to detail out in your own flare plan based on your own top symptoms. 

Biggest MCAS Flare Takeaways 

Having some mindfulness about what’s happening in your body can be so helpful in recognizing the onset of a MCAS flare up. 

I really wish I’d been more mindful during my recent flare. I would have saved myself a lot of trouble! 

But remember, we all may experience setbacks. Healing is a curving, winding journey. 

I share my own struggles with you so you know that if you go through something like this, you can come out of it, too. 

We often only see each other’s highlight reels. You know… the best parts of our lives showcased on social media.  

But sometimes, we have these down moments, too. 

So be gentle with yourself.  

And have a plan in place for those times you need it! 

Here are the big takeaways: 

• Work with your practitioner to always have a flare plan ready 
• Pay attention to early signs of a flare starting and address the triggers  
• Boost your protocol right away  
• Use your flare plan starting a few days before any travel or medical procedures and continue until the flare is over  
• Don’t minimize or deny your symptoms 
• Don’t underestimate events like mold exposures, concussions, or other traumas 
• Work with your practitioner to be proactive  
• Don’t let your mind spiral out of control 
• Remember the importance of limbic, vagal, and mast cell supports throughout your healing journey

Where to Learn More

Do you want to learn more about addressing your MCAS?

I have created courses from what I’ve learned on my own journey, so I can share this information with you.

You can learn more in my Top 8 Supplements Course.

References 

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Seneviratne, S. L., Maitland, A., & Afrin, L. B. (2017). Mast cell disorders in Ehlers-Danlos syndrome. American Journal of Medical Genetics Part C: Seminars in Medical Genetics, 175(1), 226–236. https://doi.org/10.1002/ajmg.c.31555 

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