What are common symptoms of mast cell diseases?

Mast cell disease symptoms may affect different body systems. According to Allergy Asthma Network you may experience symptoms that involve: Skin rashes or lesions, flushing, Stomach pain, nausea, vomiting, diarrhea, Heartburn (acid reflux) or GERD, Difficulty breathing, Low blood pressure, heart racing, fainting, Weak bones, bone pain, Feeling confused, trouble thinking and Anaphylaxis (a severe or life-threatening allergic reaction).

What triggers mast cell disease symptoms?

It’s important that people with mast cell disease identify and avoid their triggers. According to Allergy Asthma Network they are different for everyone, and some people may have symptoms without triggers. Some common triggers include: Certain foods or medicines, Infections, Heat, cold, or temperature change, Insect stings, Friction or vibration of the skin, such as after using a lawnmower, Stress, Exercise and Contrast dyes that you might receive during a medical exam. If you don’t know your triggers, keep a diary of when, how and where symptoms occurred. This may help you figure out and avoid triggers.

What is it like to live with mast cell activation syndrome (MCAS)?

Living with MCAS or mastocytosis can be physically and emotionally demanding. These diseases are often unpredictable. According to the Allergy Asthma Network triggers can vary from person to person, and some people may not have identifiable triggers. Here are some common ones: Heat, cold or temperature change, Allergens such as pollen and mold, Bug bites or stings, Some food and beverages (including alcohol), but not for everyone with MCAS, Alcohol, Certain drugs, including non-steroidal anti-inflammatory drugs (NSAIDs) and antibiotics, Friction, Stress, Odors or fragrances, Exercise and Contrast dyes from X-rays. Allergy immunotherapy, or allergy shots for pollen or mold, may also trigger systemic MCAS reactions.You may have symptoms on different parts of the body. They may flare up at any time, without warning. You may have frequent allergic reactions, including some that are potentially life-threatening.

What calms a mast cell disease flare?

Calming a mast cell disease flare typically involves using medications. According to Allergy Asthma Network these may include: epinephrine, antihistamines (H1 or H2 blockers), mast cell stabilizers and oral corticosteroids (OCS).

Are there foods that calm mast cell activation?

There are no known foods that can consistently calm mast cells when they are activated. Some people with mast cell disease may find themselves avoiding certain foods out of fear of a reaction. But oftentimes, there is no food triggering symptoms. According to Allergy Asthma Network , eating a healthy, balanced diet is best. This means including fresh fruits and vegetables, meat or poultry and fish in your diet. Seek a registered dietician who can work with you to identify healthy foods.

How can I calm mast cell activation naturally?

In many people with mast cell disease, there is no external cause for episodes. In these cases, the best way to limit the severity of episodes involves biofeedback or medication. Biofeedback is a technique that helps patients use their minds to control normally automatic body functions (like breathing). Less commonly, some people are able to identify specific triggers for their symptoms. In these people, avoiding specific triggers may limit the frequency or severity of reactions. But according to Allergy Asthma Network even for these people, taking regular and as-needed medication is the best way to prevent and treat reactions.

Living with Mast Cell Disease

Q: Is there a cure for mast cell diseases?

There is no cure for mast cell disease at this time. According to Allergy Asthma Network mast cell diseases are chronic conditions. For now, they require long-term management to control symptoms and improve quality of life. But you can manage it. Medications are available to help prevent or ease symptoms. These include antihistamines, mast cell stabilizers, biologics and — for people with mastocytosis — tyrosine kinase inhibitors. (People at risk for anaphylaxis should have access to two doses of epinephrine in case of a severe allergic reaction.) Avoiding known triggers and making lifestyle adjustments are also part of a mast cell disease management plan.

Q: What does a mast cell flare feel like?

When people with mast cell disease experience symptoms, it can feel like a mix of allergic reactions in multiple organ systems. According to Allergy Asthma Network some may have a skin rash or flushing. Others may have stomach issues like nausea or vomiting. Other common symptoms may include breathing issues, a sense of impending doom, and fainting. Sometimes a mast cell flare can lead to anaphylaxis, a severe allergic reaction. Managing a mast cell flare often requires quick action with emergency medication. This may include antihistamines or epinephrine.

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Mast cell diseases are often hard to manage because symptoms can be unpredictable or severe. Knowing how to identify triggers, prevent symptoms, and always be prepared for reactions can help you live a full, active life.

At a Glance: Living with Mast Cell Disease

Manage your mast cell disease. Living well with mast cell disease starts with identifying and avoiding your personal triggers. Talk with your healthcare provider about medications and lifestyle changes.
Avoid common triggers. These may include extreme temperatures, exercise, infections, stress, and certain foods. Knowing what causes your mast cell disease symptoms can help reduce your risk of having a flare-up.
Stay safe from severe reactions. People at risk for severe mast cell disease reactions are at risk for anaphylaxis. They should carry epinephrine at all times. Epinephrine is the first line of treatment for anaphylaxis.
Tracking your symptoms. Keeping a symptom diary can help you identify patterns and potential triggers. Share this information with your healthcare team to help guide treatment decisions and adjust your management plan as needed.
Find support. Connecting with others in the mast cell disease community can help you navigate the physical and emotional impacts of the condition.

Living with a mast cell disease can be a challenge – even with treatment. Finding the right ways to manage your symptoms may take time and some trial and error.

You live with your mast cell disease every day. You know your body better than anyone. By learning more about your disease and your symptoms, you can take steps to manage your condition and improve quality of life.

In many cases, people living with mast cell disease can identify what triggers their symptoms. They learn what makes them feel worse or better. Others are not able to identify their triggers but can still take medications or develop routines to reduce symptoms and flare-ups.

With the right information and approach to treatment, you can manage your mast cell disease effectively.

A smiling elderly couple sits on a couch, speaking with a healthcare professional in blue scrubs who holds a clipboard and stethoscope. The setting appears to be a cozy living room, suggesting a home health consultation.

Building Confidence with Mast Cell Disease

People with mast cell disease – whether diagnosed or undiagnosed – may live with symptoms that can be scary. They may constantly try new medicines to help treat symptoms. They may have high healthcare costs as a result.

For many, managing a mast cell disease can be exhausting. It can cause anxiety and depression. Stress can lead to worsened symptoms. Studies have found many people with mast cell diseases tend to avoid social situations.

With the right precautions and a good care plan, people with mast cell disease can live full, active lives. Here are practical tips and strategies to help you manage symptoms, avoid triggers and stay safe.

Follow your doctor’s advice

Work closely with your doctor to find the right treatment for you. Your doctor might recommend medications to help you better control your symptoms. Make sure to start an open dialogue with your doctor. Communicate how your medications are working and report any side effects.

Know your triggers

Figure out what causes your symptoms to worsen. If it is not obvious, keep a diary to track when symptoms arise or worsen. Take note of what you eat, what you experience, and how you feel. Your doctor can also help you track symptoms and identify any trends.

Remember, some patients develop mast cell-related symptoms spontaneously and without any obvious triggers. The same treatments work for people with mast cell disorders regardless of whether they can identify a trigger for their symptoms.

Avoid allergens

If you are diagnosed with allergies to things like pollen, insect stings, food or pet dander, try to avoid them as much as possible. These allergens can trigger mast cells. This might mean you have to:

stay indoors on high pollen days or when insects are more common;
check food product labels to ensure what you eat is safe;
make sure your home’s indoor air is as clear of allergens as possible.

You may want to consider allergy immunotherapy to help your body better tolerate exposure to allergens.

A doctor wearing a white coat and glasses uses a stethoscope to listen to the heartbeat of a smiling woman sitting in an examination room. The woman is wearing a light blue shirt.

Take medications as prescribed

If your doctor prescribes medication to manage your mast cell disease, take it as directed. Check the package insert for more information about the drug. Confirm that you are taking it correctly and at the right dose. Review potential side effects and report any that occur to your physician. This can help ensure the medicine works as it is intended and prevents or treats symptoms.

Carry emergency medications with you

If you are at risk for severe systemic reactions, carry epinephrine with you at all times. Epinephrine is the first line of treatment for these reactions, called anaphylaxis. Take epinephrine at the first sign of symptoms. Do not delay as this could increase your risk of hospitalization or a fatal outcome. Products include an epinephrine nasal spray and auto-injector. Two doses are needed in case a second reaction occurs.

If your symptoms improve after one dose of epinephrine and you’re feeling better, you do not need to go the hospital or emergency department. However, you should administer a second dose and seek emergency medical help if…

symptoms return or worsen after the first dose of epinephrine;
you have severe anaphylaxis;
symptoms do not go away promptly or completely after the first dose of epinephrine.

If you do not have epinephrine readily available, call 911 for emergency medical treatment. Or go to the hospital, emergency department or urgent care clinic right away.

Carrying epinephrine with you at all times may have the added benefit of helping you feel less anxious should a severe reaction occur. Be sure to store your epinephrine products someplace easily accessible. Get a storage pack that is easy to carry.

You may also want to have easy access to antihistamines. These are commonly used to treat mast cell diseases. They can help prevent any symptoms you have from worsening.

Wear a Medical ID bracelet

If you are unable to take an emergency medication yourself, a Medical ID bracelet or jewelry can help. It can let others know what you may be experiencing and what to do in case of an emergency. For example, the bracelet might say: “I am at risk for anaphylaxis. Please call 911 and/or give me epinephrine if I cannot respond.”

Keep aware of temperatures

Some people with mast cell disease are sensitive to heat. Others may have symptoms when it’s cold. Be mindful of sudden changes in temperature or extreme temperatures. When it’s hot, wear hats and loose-fitting clothing. When it’s cold, dress in layers to help you maintain your body temperature.

The same temperature control applies to bathing. If you are sensitive to cold, don’t jump into a cold bath or pool as this could trigger symptoms.

Stay active

Regular exercise can help you feel better. It can also help reduce your stress levels. Make sure to choose activities you enjoy. Consider walking, swimming, or biking – but listen to your body and stop if you feel unwell. Try low-impact exercise if vigorous activity causes symptoms. Lift weights regularly to promote bone health.

Make sure you manage your body temperature while exercising. Wear layers if it’s cold outside and loose clothing when it’s hot. Consider exercise in a climate-controlled gym or inside your home.

Manage stress

The impact of stress on the body can affect your immune system and worsen mast cell disease. It can affect your immune system and make you more prone to more infection. It’s important to find ways to relax and keep stress in check. Consider activities like reading, drawing, or spending time with friends and family. Try mindfulness activities like yoga or meditation.

Eat a healthy diet

Eating a balanced diet is good practice for overall health. But it might be especially helpful for people with mast cell disease who need strong immune systems. Make sure to eat plenty of fruits, vegetables, and whole grains. Avoid foods that you know trigger your symptoms.

What about alcohol? It may trigger mast cell disease symptoms in some people. If it does, avoid alcohol and consider drinking non-alcoholic beverages.

Learn more about your condition

The more you know about mast cell disease, the better you can manage it. Do not hesitate to ask your doctor questions. Look for credible, medically approved sources of information, especially online.

When you understand your condition, you can make informed decisions about your health.

Stay connected

Reach out to support groups or online communities so you can connect with others who have mast cell disease. Sharing experiences and tips can provide practical advice and comfort.

Keep a positive outlook

For some people with mast cell disease, it can be hard to stay positive when managing bothersome symptoms. Others may have anxiety about having a life-threatening reaction.

Maintaining a positive outlook, even in the face of health challenges, can help you cope better. It can enhance your resilience and improve your overall well-being. Celebrate your successes, no matter how small, and focus on the things that make you happy. Surround yourself with support, stay informed of your health, and take small steps to nurture both your body and mind.

If you are unable to break the cycle of negative thoughts, consider seeing a mental health specialist or ask your doctor for a referral.

The Mast Cell Disease Society has a wealth of patient education resources. Their goal is to provide education. The organization can also help connect people living with mast cell diseases.

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Do Foods Trigger Mast Cell Disease Symptoms?

In general there are no specific foods that trigger mast cell disease symptoms. According to the Mast Cell Disease Society, some people do find they are more reactive to certain foods and drinks.

Alcohol, in particular, is considered a trigger for mast cell disease symptoms. Other triggers some patients have reported include shellfish, tomatoes and tomato-based products, food preservatives, artificial dyes and flavorings, and the flavor enhancer monosodium glutamate (MSG).

What about eating a low-histamine diet? Can low-histamine foods keep your body from triggering symptoms?

Current research does not support a low-histamine diet. for mast cell disease. However, you know your body best. If you think certain foods are triggering mast cell-related symptoms, avoid those foods. You may want to keep a journal about your diet and write down your symptoms to share with your doctor.

You may also want to consult a registered dietician or nutritionist. A registered dietician or nutritionist can help you figure out if foods are triggering symptoms — and more importantly, ensure you’re getting the right nutrition if you do avoid certain foods.

Questions & Answers on Living with Mast Cell Disease

Here’s a Q&A with some common questions from people living with mast cell disease. If there’s a topic you would like to see addressed here, please email our editor.

Living with mastocytosis or MCAS can be physically and emotionally demanding and draining. The diseases are often unpredictable.

Triggers can vary from person to person, and some people may not have identifiable triggers. You may have symptoms on different parts of the body. Hives may flare up at any time, without warning. You may have frequent allergic reactions, including some that are potentially life-threatening.

For some people, living with a mast cell disease may involve dietary restrictions. This can make socializing around food difficult and limit dietary options. The need to avoid triggers can make going out in public or crowded spaces difficult. It can take an emotional toll, leading to mental health issues such as anxiety or depression.

With proper treatment, lifestyle adjustments and awareness, many people find ways to live well with mast cell disease. It can require vigilance, though. Advocate for yourself by educating your family, friends, coworkers and others about the seriousness of mast cell disease.

Over time, you can learn to adapt your lifestyle, environment, and mindset to better manage symptoms and improve quality of life. Speak with a mental health specialist.

There is no cure for mast cell disease at this time. Mast cell diseases are chronic conditions. They require long-term management to control symptoms and improve quality of life.

Medications are available to help prevent or ease symptoms. These include antihistamines, mast cell stabilizers, and – for people with mastocytosis – tyrosine kinase inhibitors. Your doctor may prescribe biologics off-label. These are more advanced treatments.

In addition, people at risk for anaphylaxis should have access to epinephrine in case of a severe reaction due to mast cell disease.

Avoiding known triggers and making lifestyle adjustments are key parts of a mast cell disease management plan.

Most people with mast cell disease have long and healthy lives. The key is learning to manage your symptoms. Medications can help by stopping or reducing symptoms.

Antihistamines, for example, can be used to stop mild to moderate allergic reactions. Some people take special medications that can block or lower the chemicals in our bodies that cause mast cell problems.

In rare cases, people with blood cancers can develop mastocytosis at the same time. Even more rarely, people with an extremely uncommon advanced form of systemic mastocytosis can develop blood cancer. Like other cancers, these are life-threatening conditions that require specific treatments from cancer doctors, like chemotherapy or bone marrow transplant.

Mast cell diseases are chronic conditions. They do not typically go away. The diseases involve the body’s mast cells, which release excessive chemicals like histamine, either spontaneously or in response to various triggers. Since these conditions are chronic, people usually need lifelong management of symptoms.

With proper mastocytosis or MCAS treatment, most patients with mast cell diseases can live full and active lives.

When people with mast cell disease have symptoms, it is often a mix of allergic reactions in two or more organ systems.

Some may have a skin rash or flushing. Others may have stomach issues like nausea or vomiting. Other common symptoms may include breathing issues, a rise in blood pressure, and fainting. Sometimes a mast cell disease flare-up can lead to anaphylaxis, a severe allergic reaction.

Managing a mast cell disease flare-up often requires quick action with emergency medications. These may include antihistamines or epinephrine.

Calming a mast cell disease flare typically involves using medications. These may include:

Antihistamines (H1 or H2 blockers) can help reduce histamine-related symptoms such as skin rashes, flushing, breathing problems or stomach discomfort.
Epinephrine is the first-line treatment for a severe mast cell-mediated systemic reaction, or anaphylaxis. Anyone with a history of anaphylaxis should always carry two doses of epinephrine. Devices include a nasal spray and an auto-injector. Epinephrine can stop severe symptoms of anaphylaxis.
Mast cell stabilizers can prevent further mast cell activation and worsening of symptoms.
Oral corticosteroids (OCS) can help prevent or reduce inflammation when a flare-up is persistent. OCS are usually taken as a short course or burst. If used regularly or repeatedly over the long-term, they can have lasting negative effects on health.

Work with your doctors to develop a treatment plan that addresses the onset of symptoms.

There are no known foods that can calm mast cells when they are activated. Some people with mast cell disease may find themselves avoiding certain foods out of fear of a reaction. But oftentimes, there is no food that triggers symptoms.

In general, eating a healthy, balanced diet is best. This means fresh fruits and vegetables, meat or poultry, and fish in your diet. Seek a registered dietician who can work with you to identify healthy foods.

Some people with mast cell disease experience symptoms without an obvious trigger. Others find that certain factors, such as stress, temperature changes, infections, medications, or foods, can trigger symptoms. Identifying and avoiding personal triggers may help reduce the frequency or severity of reactions.

Stress-management techniques such as relaxation exercises, mindfulness, and biofeedback may help some people feel better, especially if stress worsens their symptoms. However, these approaches are not a substitute for medical treatment and have not been proven to directly stop mast cell activation.

For most people with mast cell disease, medications prescribed by a healthcare provider remain the main way to prevent and treat symptoms. If you have a mast cell disorder, work with your healthcare team to develop a treatment plan that is right for you.

Before taking vitamins, supplements, or other non-prescription products, talk with your doctor. Some supplements have limited scientific evidence for mast cell disease, and a few may even trigger symptoms in certain people. Keep track of any changes in your symptoms and discuss them with your healthcare provider.

Mast Cell Disease Resources

These resources can help you prepare for appointments, plan for emergencies, and connect with others who understand life with mast cell disease.

New to mast cell disease? Start here →

A new diagnosis can bring many questions. You do not need to learn everything at once. The Mast Cell Disease Society (TMS) offers information about mast cell diseases, testing, treatment, and life after diagnosis.

Visit The Mast Cell Disease Society and choose “New Patients – Start Here” to begin.

Find a doctor familiar with mast cell diseases

Finding a healthcare professional who understands your condition can help you take the next step in your care. TMS offers a Find an HCP Resource to help you explore care options.

Before scheduling, ask whether the doctor treats your specific condition, sees patients in your age group, and requires a referral. You can also check whether the office accepts your insurance.

Track symptoms and prepare for appointments

A symptom record can help you explain what happens between doctor visits. TMS offers a symptom tracker and patient guides to help you record symptoms, possible triggers, medicines, and reactions.

Bring your notes, medicine list, and questions to your appointment. You may want to ask:

What do my test results mean?
What should I do when my symptoms get worse?
How will we know whether my treatment is working?
Which symptoms need emergency care?

Use this MCD Glossary to look up unfamiliar words. Ask your healthcare team to explain how each term relates to your care.

Prepare for emergency care

Planning ahead can make it easier to share important information during an emergency. TMS provides an Emergency Alert Card and an Emergency Room Response Plan through its patient resources page.

Review these materials with your doctor. Ask your doctor to help create a plan specific to your needs, including when to use prescribed emergency medicine and when to seek emergency help. Share your plan with family members and others who may help during a reaction.

Connect with others who understand MCD

Living with mast cell disease can feel isolating. Talking with people who have similar experiences may help you feel understood and give you a place to share everyday concerns.

TMS offers virtual support groups and online communities. Visit TMS’s Find Support page to explore ways to connect.

Find information for everyday life about Mast Cell Disease

You may have questions about daily routines, relationships, or the emotional effects of living with a long-term condition. These Allergy & Asthma Network guides offer more information:

October 2026
Reviewed by:
Jonathan J. Lyons, MD, is a board-certified allergist and immunologist and Professor of Medicine at the University of California, San Diego. He is the former chief of the Translational Allergic Immunopathology Unit in the Laboratory of Allergic Diseases at the National Institutes of Allergy and Infectious Diseases (NIAID). Dr. Lyons has received multiple awards for his groundbreaking work in characterizing genetic causes for increased mast cell hyperactivity and anaphylaxis, and first described hereditary alpha-tryptasemia.