Living With Multiple Autoimmune Diseases

Key Takeaways

• A patient is diagnosed with Multiple Autoimmune Syndrome (MAS) if they have at least three distinct autoimmune diseases.
• Nearly 25% of people with an autoimmune condition will develop at least one additional one over the course of their life, making MAS more common than many realize.
• Overlapping symptoms can delay diagnosis and complicate treatment when people have multiple autoimmune diseases affecting their skin, thyroid, or connective tissue.
• Well-coordinated care, medication management, and daily self-monitoring can make living with multiple autoimmune disease syndrome more manageable.

Navigating Multiple Autoimmune Conditions

Autoimmune diseases occur when someone’s immune system erroneously attacks their body’s own healthy cells and tissues. Even if an autoimmune condition is organ-specific, as in type 1 diabetes, which targets the insulin-producing beta cells in the pancreas, there is typically an underlying immune dysregulation that makes the individual more susceptible to additional disorders.

When a single individual has three or more distinct autoimmune diseases, they are diagnosed with multiple autoimmune syndrome (MAS). Unfortunately, sometimes people living with multiple autoimmune diseases don’t get the care or support they need, especially if their friends, family members, and healthcare providers focus primarily on a single condition.

Moreover, many people with MAS have to overcome obstacles from overlapping symptoms and juggling multiple treatments. Therefore, managing multiple autoimmune disease syndrome requires coordination, patience, and an individualized approach.

This helpful guide outlines the basics of MAS, provides practical tips for managing comorbidities, and lists resources that have helped other people with multiple autoimmune syndrome.

Understanding the Prevalence of MAS

Testing positive for one autoimmune disorder can feel overwhelming as is, but figuring out you have multiple autoimmune diseases can be even more destabilizing. Still, it is important to know that you are not alone.

MAS is more common than many people realize. In fact, 25% of individuals diagnosed with one autoimmune condition eventually develop at least one more. Nevertheless, circumstances vary—some people live with two conditions, while others, like Tessa Muldoon and Erika Reyna, have to manage several.

Risk Factors for Developing MAS

Some examples of factors that influence how at risk you are of developing multiple autoimmune diseases are: 

• Genetics –  Certain immune-related genes, especially Human Leukocyte Antigen (HLA) gene variants, can increase the risk of the immune system harmfully misidentifying the body’s own tissue.
• Breakdown of immune tolerance – The immune system normally eliminates or suppresses cells that attack the body, but when tolerance mechanisms fail, autoreactive cells can go on to target more tissues over time.
• Shared inflammatory pathways – Many autoimmune diseases rely on the same inflammatory signals, such as cytokines. If one condition chronically activates these pathways, additional autoimmune activity can develop.
• Environmental triggers – Infections, smoking, stress, and gut microbiome changes can activate the immune system and trigger autoimmune conditions in genetically susceptible individuals.
• Hormonal changes – Hormones like estrogen can affect immune function, meaning fluctuations during puberty, pregnancy, or menopause can cause an immune imbalance that increases susceptibility to autoimmune diseases.

Use the Autoimmune Association’s disease list to explore risk factors for specific disorders, along with their symptoms, causes, and treatment options.

Diagnostic Challenges Faced by People with MAS

Whether you have one or multiple autoimmune disorders, receiving personalized medical care is essential. Successfully managing a condition starts with getting an accurate diagnosis, which is rarely easy for people with multiple autoimmune syndrome due to the challenges presented by overlapping symptoms. 

Confusion from Overlapping Symptoms

Because symptoms such as fatigue, joint pain, and brain fog are common across many autoimmune conditions, a flare-up of one condition may mimic the onset of another. As a result, new symptoms may be dismissed as part of an existing diagnosis rather than acknowledged as something new, which can delay diagnoses and lead to fragmented care.

To illustrate this challenge, the table below lists examples of autoimmune diseases and potential symptoms that are pervasive across the spectrum of conditions.

To determine which condition is driving which symptom, it’s encouraged to clearly communicate the symptoms you are experiencing with your doctor and keep detailed records of when and how often you experience them. By keeping track of when symptoms start, how they fluctuate, and how they respond to treatments, you can help your healthcare providers differentiate between conditions and tailor care more effectively.

Pursuing Treatment for Autoimmune Disorders

Although autoimmune diseases are not curable, it is often possible to control symptoms and live more comfortably through healthy lifestyle habits and targeted treatments. Autoimmune disorders can often be managed with approaches like:

• Immunosuppressants
• Biologics
• Anti-inflammatory medications
• Hormone replacement therapy

Thanks to these efforts, some patients can even achieve remission, in which symptoms become significantly less common or even disappear. For instance, approximately 42.4% to 88% of patients with systemic lupus erythematosus achieve and maintain remission for at least 1 year following treatment.

How MAS Treatments Differ

When more than one condition is present, treatment is typically more complicated because of the increased complexity of medication regimens. On one hand, some immunomodulatory therapies may help multiple autoimmune diseases at once, but on the other hand, some medications may improve one disease while worsening symptoms of another. 

For example, steroids may reduce inflammation, which can help with something like lupus or rheumatoid arthritis, but they may simultaneously cause blood sugar fluctuations, which can hinder the management of type 1 diabetes. So, balancing treatment-related trade-offs requires careful coordination.

Managing Multiple Treatments Safely

Safely managing multiple treatments requires careful monitoring of your health and consistent communication with your healthcare provider. Some strategies that can help people with multiple autoimmune syndrome safer treatment management include:

• Medication tracking – To stay informed, you should maintain an up-to-date list of all medications you are taking or planning to take, noting their dosages and the providers who prescribed them.
• Understanding interactions – After creating the list, explicitly ask pharmacists or providers about potential drug interactions. Apps like Medisafe may also warn you if two of your meds may cause an unhealthy interaction.
• Prioritizing treatments – In some cases, one condition may need more aggressive control than another. Work with your medical provider to ensure treatments are appropriately balanced.
• Regular lab monitoring – For a clearer, more accurate look at a treatment’s efficacy and side effects, you may need blood tests and imaging.

Patients living with multiple autoimmune disease syndrome often become skilled advocates for their own health in an attempt to reduce risks. It is always a good idea to ask questions, request clarification, and ensure all providers are informed about relevant changes.

What Medical Providers Can Help

Because autoimmune diseases affect a wide range of organ systems, people with MAS often work with many different specialists. Some medical professionals you may have to meet with are:

• Rheumatologists – Specialize in treating systemic and joint-related autoimmune diseases, such as rheumatoid arthritis, lupus, and vasculitis.
• Endocrinologists – Manage autoimmune disorders that affect hormone-producing glands, including type 1 diabetes and Hashimoto’s thyroiditis.
• Gastroenterologists – Treat autoimmune diseases of the digestive tract and liver; examples include Crohn’s disease and celiac disease.
• Dermatologists – Manage autoimmune skin conditions like psoriasis and pemphigus.
• Neurologists – Address autoimmune diseases affecting the nervous system, such as multiple sclerosis and myasthenia gravis.

In addition to the specialists mentioned above, it is crucial to have a strong primary care provider, as they play a critical coordinating role by helping oversee the broader picture. Finding the right doctor can give you peace of mind when it comes to monitoring preventive care and ensuring that treatments do not conflict with one another.

Coordinating Care Across Providers

When working with several specialists for comprehensive treatment, it’s important to be proactive to ensure you and all your providers are on the same page. Maintaining open communication and advocating for your own care can reduce confusion among your care team and improve treatment outcomes for multiple autoimmune diseases.

Some practical strategies you can implement to improve coordination include:

• Taking a comprehensive medication list to each appointment
• Requesting copies of lab and imaging results
• Using email or patient portals to share updates between providers
• Keeping a personal health binder or digital record

Consider Daily Management and Lifestyle Strategies

When it comes to living with multiple autoimmune syndrome, medical treatment is only part of the picture. People with MAS often have to adapt their daily routines, make health-conscious lifestyle choices, and be mindful of incorporating positive habits to help stabilize symptoms and reduce the frequency of flare-ups.

Review the table below to see how lifestyle habits play a role in the management of multiple autoimmune diseases.

Grasp the Emotional and Social Impact

Managing multiple autoimmune disease syndrome is emotionally taxing. Throughout the process, it is normal to feel frustration, isolation, or grief. Some obstacles that can bring up challenging emotions for MAS patients are:

• News about disease progression can cause anxiety
• Diagnostic delays can cause frustration
• Frequent medical appointments can cause fatigue
• Canceled plans and reduced productivity can lead to guilt

People living with MAS may feel misunderstood, even within the broader autoimmune community. Validating how you feel is one of the first steps toward coping with autoimmune challenges. Recognizing that emotional responses are normal helps people shift from self-judgment to self-compassion, which becomes a protective factor.

How to Get Support for MAS

To get support for multiple autoimmune syndrome, it’s recommended that patients lean into available support systems and build a personal network of friends, dedicated care organizations, and online communities that can ease stress and help manage symptoms. Some examples of support options for people with multiple autoimmune diseases are:

• Peer support groups through local organizations
• Online patient communities from Inspire and Smart Patients
• Licensed counselors or therapists
• Family education sessions to help them understand invisible symptoms

Connection reduces isolation and fosters resilience, underscoring the importance of relying on others. Whether through structured groups or informal networks.

Implement Practical Tools and Resources 

Technology can help simplify complex care routines. Some examples of practical tools and resources are:

• Symptom tracking apps – There are many digital tools for tracking autoimmune symptoms, medications, and triggers, making it easy to share records with medical providers to improve clinical decision-making.
• Medication management tools – Adding pharmacy reminders to relevant apps and calendars can streamline refills and reduce missed doses.
• Educational resources – The Autoimmune Association offers educational materials, research updates, and advocacy information for individuals living with autoimmune diseases, empowering them to make informed decisions.
• Patient communities – Both in-person and online support groups offer spaces to share experiences and practical tips. Getting actionable insights from others navigating MAS can offer reassurance.

Taking an active role in care does not mean you have to carry the burden alone. Instead, you should collaborate with your medical providers, ask questions, and use tools that support well-being.

Don’t Let Autoimmune Disorders Stop You

Living with multiple autoimmune diseases demands resilience, organization, and support. By increasing symptom awareness, carefully managing treatments, coordinating care across providers, and addressing emotional well-being, you can build a comprehensive strategy for navigating multiple autoimmune disease syndrome.

The Autoimmune Association strives to empower patients and show them that support is always within reach. To learn more about autoimmune conditions and connect with a supportive community, explore the tools and programs available through our resource center.