When the body’s defense system turns against itself, managing the symptoms and finding the right treatment becomes a lifelong journey. Understanding the approaches available—from established medications to promising therapies being tested in research studies—can help patients and their families navigate the challenges of living with immune system disorders.

Managing Immune System Disorders: A Path Forward

When someone receives a diagnosis of an immune system disorder, one of the first questions that comes to mind is: what can be done about it? The answer depends on what type of disorder is present and how it affects the body. Immune system disorders occur when the body’s natural defense system doesn’t work as it should, either becoming too weak, too active, or mistakenly attacking healthy tissues^[1].

The main goal of treatment is to help people manage their symptoms, slow down disease progression when possible, and improve their quality of life. Because these conditions are chronic—meaning they last a long time and often for life—treatment focuses on controlling the disorder rather than curing it completely^[2]. Healthcare providers work with patients to create individualized treatment plans based on the specific type of disorder, which organs or tissues are affected, how severe the symptoms are, and the patient’s overall health.

There are established treatments that medical societies have approved and recommended for years. At the same time, researchers are continuously studying new therapies in clinical trials, searching for better ways to help patients. Some people with immune system disorders may benefit from standard treatments alone, while others might be eligible to participate in research studies testing innovative approaches.

Standard Treatment Approaches

The backbone of managing immune system disorders involves several types of established treatments. The specific medications and methods used depend heavily on whether the immune system is underactive, overactive, or attacking the body’s own tissues.

Treatments for Weakened Immune Systems

When the immune system is too weak to fight off infections properly—a condition known as immunodeficiency—the focus is on preventing infections and treating them quickly when they occur. People with weakened immune systems often need antibiotics at the first sign of infection, and these treatments may need to last longer than usual^[8].

One of the most important treatments for certain types of primary immunodeficiency (immune problems present from birth) is immunoglobulin replacement therapy. This treatment involves giving patients antibodies—the proteins that help fight infections—that their bodies cannot produce on their own. These antibodies can be given through an intravenous line into a vein or injected under the skin. This therapy helps protect patients from serious infections and allows many to lead more active lives.

For the most severe cases of immune deficiency, such as severe combined immunodeficiency (SCID), more intensive treatments are needed. Hematopoietic stem cell transplantation—where healthy stem cells are transplanted to rebuild the immune system—can be life-saving. Without treatment, conditions like SCID are deadly because children are in constant danger from bacteria, viruses, and fungi^[3][5].

Treatments for Overactive Immune Systems and Autoimmune Disorders

When the immune system becomes too active or mistakenly attacks the body’s own tissues—conditions called autoimmune diseases—treatment aims to reduce this inappropriate immune activity. More than 100 different autoimmune diseases exist, and they can affect almost any part of the body, from joints and muscles to skin, blood vessels, the digestive system, and internal organs^[2].

Corticosteroids, such as prednisone, are among the most commonly used medications for autoimmune disorders. These drugs work by reducing inflammation and suppressing immune system activity. They can be taken by mouth daily or given as injections. While corticosteroids are effective at controlling symptoms and preventing flares (episodes when symptoms worsen), they can cause side effects when used long-term, including weight gain, increased blood sugar, bone thinning, and increased risk of infections^[7][9].

Other medications work by targeting specific parts of the immune system. Azathioprine and methotrexate are drugs that slow down the growth and activity of immune cells, particularly T cells and B cells—types of white blood cells that play key roles in immune responses. These medications are taken by mouth or as injections and are often used for conditions like rheumatoid arthritis, lupus, and inflammatory bowel disease^[9].

A newer class of medications called biologic therapies has revolutionized treatment for many autoimmune disorders. These are engineered proteins that target very specific parts of the immune system. For example, some biologics block tumor necrosis factor (TNF), a chemical messenger (called a cytokine) that promotes inflammation. Others target different cytokines such as interleukin-1 (IL-1), interleukin-6 (IL-6), interleukin-12 (IL-12), interleukin-17 (IL-17), or interleukin-23 (IL-23)^[9].

Some biologic medications work by removing B cells from circulation or by slowing down both B cells and T cells. Because these drugs target specific parts of the immune system rather than suppressing it entirely, they can be effective while potentially causing fewer side effects than older medications. However, because they do affect immune function, people taking biologics may have an increased risk of certain infections^[9].

Duration and Monitoring of Treatment

Because immune system disorders are chronic conditions, treatment is typically long-term and often lifelong. Healthcare providers carefully monitor patients through regular appointments and blood tests to check how well treatments are working and to watch for side effects. Adjustments to medications are common as the disease changes over time or as patients experience periods of remission (when symptoms improve or disappear) and flares.

Many patients with autoimmune diseases need to take multiple medications at the same time to control different aspects of their condition. The process of finding the right combination and dosage can take time and requires patience from both patients and healthcare providers.

Promising Approaches in Clinical Trials

While standard treatments help many people manage their immune system disorders, researchers are constantly working to develop better therapies. Clinical trials are research studies where new treatments are carefully tested to see if they are safe and effective. These studies happen in phases, each designed to answer specific questions.

Understanding Clinical Trial Phases

Phase I trials are the first studies in humans and focus primarily on safety. Researchers want to know if the new treatment causes serious side effects and what dose is safe to use. These trials usually involve small numbers of participants.

Phase II trials test whether the treatment actually works—whether it improves symptoms, slows disease progression, or provides other benefits. These studies include more participants than Phase I and continue to monitor safety.

Phase III trials compare the new treatment to existing standard treatments or placebo (an inactive substance) in large groups of patients. These studies provide the strongest evidence about whether a new treatment should become a standard option for patients.

Innovative Therapies Being Studied

Several exciting approaches are being investigated in clinical trials for immune system disorders. One area of active research involves costimulation blockade—medications that interfere with the signals immune cells need to become fully activated. By blocking these signals, researchers hope to prevent immune cells from attacking the body’s tissues while preserving the immune system’s ability to fight infections^[11].

Another promising avenue is regulatory T cell therapy. Regulatory T cells are specialized immune cells that normally act like brakes on the immune system, preventing it from attacking the body’s own tissues. In some autoimmune diseases, these regulatory cells don’t work properly or there aren’t enough of them. Scientists are developing ways to boost the number or function of regulatory T cells to restore balance to the immune system^[11].

Antigen-specific immunotherapy represents an attempt to “re-educate” the immune system. In this approach, patients receive carefully prepared forms of the specific proteins (antigens) that their immune system is mistakenly attacking. The goal is to teach the immune system to tolerate these proteins rather than attack them, similar to how allergy shots work for allergies. This approach has the potential advantage of targeting only the problematic immune response while leaving the rest of the immune system intact^[11].

Researchers are also exploring ways to manipulate the interleukin-2 (IL-2) pathway. IL-2 is a cytokine that plays crucial roles in both activating immune responses and supporting regulatory T cells. Scientists are testing whether giving low doses of IL-2 or modified versions of IL-2 can preferentially boost regulatory T cells, helping to restore immune balance without causing excessive immune suppression^[11].

Gene Therapy and Advanced Approaches

For certain severe primary immunodeficiencies, gene therapy offers hope of correcting the underlying genetic defect that causes the immune system to malfunction. In gene therapy, scientists take cells from the patient, correct the faulty gene in the laboratory, and return the corrected cells to the patient. While still in relatively early stages of development, gene therapy has shown promising results for some types of SCID and other inherited immune disorders.

Participating in Clinical Trials

Clinical trials for immune system disorders are conducted at research centers around the world, including locations in the United States, Europe, and other regions. Each trial has specific eligibility criteria—requirements that participants must meet to enroll. These criteria might include having a certain type or stage of disease, being within a certain age range, or not having certain other health conditions.

Preliminary results from some trials have shown encouraging signs, such as improvements in symptoms, reduction in disease markers measured in blood tests, and acceptable safety profiles. However, it’s important to remember that experimental treatments are still being studied and may not work for everyone. Participants in clinical trials receive careful monitoring and contribute valuable information that advances medical knowledge for future patients.

Most common treatment methods

• Immunoglobulin replacement therapy
  • Provides antibodies that the body cannot produce on its own to help fight infections in people with immunodeficiency disorders
  • Can be administered intravenously through a vein or by injection under the skin
  • Helps protect patients from serious infections and improves quality of life
• Corticosteroids
  • Medications like prednisone that reduce inflammation and suppress immune system activity
  • Commonly used for autoimmune diseases to control symptoms and prevent flares
  • Can be taken by mouth daily or given as injections
  • May cause side effects with long-term use including weight gain, increased blood sugar, and bone thinning
• Immunosuppressive medications
  • Drugs such as azathioprine and methotrexate that slow down immune cell growth and activity
  • Target T cells and B cells that play key roles in immune responses
  • Used for conditions like rheumatoid arthritis, lupus, and inflammatory bowel disease
  • Can be taken by mouth or as injections
• Biologic therapies
  • Engineered proteins that target specific parts of the immune system
  • Some block tumor necrosis factor (TNF), a chemical messenger that promotes inflammation
  • Others target specific cytokines such as interleukin-1, interleukin-6, interleukin-12, interleukin-17, or interleukin-23
  • Some work by removing B cells or slowing down both B cells and T cells
  • May cause fewer side effects than older medications while remaining effective
• Antibiotic therapy
  • Essential for people with weakened immune systems who develop infections
  • Requires fast and aggressive treatment at first signs of infection
  • May need longer courses than typically prescribed for people with healthy immune systems
• Stem cell transplantation
  • Also called hematopoietic stem cell transplantation
  • Involves transplanting healthy stem cells to rebuild the immune system
  • Can be life-saving for severe cases like severe combined immunodeficiency (SCID)
  • Used when other treatments are not effective for serious immune deficiencies
• Gene therapy
  • Aims to correct underlying genetic defects that cause immune system malfunction
  • Involves taking cells from the patient, correcting the faulty gene in the laboratory, and returning corrected cells to the patient
  • Shows promise for certain types of severe combined immunodeficiency and other inherited immune disorders
  • Still in relatively early stages of development
• Costimulation blockade
  • Experimental approach being tested in clinical trials
  • Medications that interfere with signals immune cells need to become fully activated
  • Aims to prevent immune cells from attacking body tissues while preserving ability to fight infections
• Regulatory T cell therapy
  • Investigational treatment approach in clinical trials
  • Works to boost the number or function of regulatory T cells that act as brakes on the immune system
  • Goal is to restore immune system balance in autoimmune diseases
• Antigen-specific immunotherapy
  • Experimental therapy being studied in research settings
  • Patients receive prepared forms of specific proteins their immune system is mistakenly attacking
  • Aims to re-educate the immune system to tolerate these proteins rather than attack them
  • Potentially targets only problematic immune responses while leaving rest of immune system intact
• Interleukin-2 pathway manipulation
  • Being explored in clinical trials
  • Tests whether low doses of IL-2 or modified versions can boost regulatory T cells
  • Goal is to restore immune balance without causing excessive immune suppression

Living Well with an Immune System Disorder

Beyond medical treatments, daily habits and lifestyle choices play an important role in managing immune system disorders and maintaining overall health. Taking care of yourself doesn’t have to be complicated, but it does require commitment and consistency^[15].

Basic Hygiene and Infection Prevention

Good hygiene practices are especially important for people with immune system disorders, particularly those with weakened immune systems. Washing hands for at least 20 seconds with soap and water before meals and after contact with other people is one of the most effective ways to prevent infections. Hand sanitizer and antibacterial wipes can provide additional protection between hand washings. People should also avoid touching their eyes, nose, and mouth, as these are common entry points for germs^[15].

Regular bathing, dental care including tooth brushing and dentist visits, and keeping living spaces clean all help reduce exposure to bacteria and viruses. In certain situations, such as during respiratory virus season or in crowded enclosed spaces, wearing a mask can provide additional protection. Physical distancing and avoiding contact with people who are sick are also important preventive measures^[15].

Nutrition and Healthy Eating

Eating well provides multiple nutrients that support optimal immune function. A healthy diet emphasizes plenty of fruits and vegetables, lean proteins, whole grains, and fat-free or low-fat milk and dairy products. It also means limiting saturated fats, salt, and added sugars. While eating a nutritious diet is important, it’s also crucial not to overdo certain vitamins and minerals, as too much of some can be harmful. Anyone considering nutritional supplements should talk to their healthcare provider first^[18].

Physical Activity and Maintaining a Healthy Weight

Regular physical activity helps people feel better, sleep better, and reduce anxiety. Combined with healthy eating, physical activity can help maintain a healthy weight. Research suggests that physical activity may benefit immune function, and studies have shown that adults who meet physical activity guidelines have a lower risk of dying from infections like flu and pneumonia^[18].

For adults, weekly physical activity guidelines recommend at least 150 minutes of moderate-intensity aerobic activity plus two days of muscle-strengthening activities. This can be spread throughout the week, such as 30 minutes a day, five days a week. Exercise has also been proven to reduce stress levels, which is particularly important since high levels of chronic stress can weaken immune function^[14].

Maintaining a healthy weight is important because obesity can impair immune function and may even reduce the effectiveness of certain vaccines. Safe ways to maintain a healthy weight include reducing stress, eating nutritious foods, staying within daily calorie needs, getting enough sleep, and engaging in regular physical activity^[18].

Sleep and Rest

Getting adequate sleep is crucial for immune health. Poor sleep quality has been shown to increase the risk of infections. People with immune system disorders should aim for seven to nine hours of quality sleep each night. Establishing a regular bedtime routine, creating a comfortable sleeping environment, and limiting screen time one to two hours before bed can all improve sleep quality^[14][15].

Stress Management

Chronic stress has been associated with reduced effectiveness of the immune system. While stressful situations are a normal part of life, learning to manage stress well is important. Incorporating stress-reducing activities such as meditation, deep breathing exercises, yoga, or enjoyable hobbies into daily routines can help. Finding what works for each individual person and making it a regular practice is key^[14].

Avoiding Harmful Substances

Not smoking is one of the best things anyone can do for their immune system and overall health. If alcohol is consumed, it should be only in moderation, as excessive alcohol use can weaken immune function. These lifestyle choices have far-reaching effects on health beyond just the immune system^[17].

Staying Current with Vaccinations

Vaccines are particularly important for people with immune system disorders, though the specific vaccines recommended may differ based on the type of disorder and treatments being used. Vaccines provide additional protection against preventable diseases and help strengthen immune responses. For people treated with biologic medications, certain vaccines may need to be timed in coordination with medication schedules. Working closely with healthcare providers to determine the appropriate vaccination schedule is essential^[14].

Building a Healthcare Partnership

Having a primary care provider who understands immune system disorders is invaluable. This relationship allows for better coordination of care, monitoring of the condition over time, and quick response when problems arise. Being an active participant in healthcare—understanding what’s happening, asking questions, and taking charge of medical and personal care—leads to better outcomes^[15].

The Emotional Journey

Living with an immune system disorder affects more than just physical health. When a diagnosis is made, many people experience a flood of emotions. While there may be relief that there is finally an explanation and something to treat, there may also be feelings of tremendous loss of one’s former identity. Questions arise such as “Who am I now?” as people adjust to their new reality^[19].

Feelings of low self-esteem, sadness, and even depression are commonly experienced by people living with autoimmune and other immune disorders. A common theme is feeling alone with the illness. Many find that family and friends are supportive initially or during crises such as hospitalizations, but that support may fade over the long run. Family and friends may also struggle with the loss of their loved one’s former self and may become anxious or depressed themselves^[19].

The conflicting needs of the patient to find and accept a new sense of self and those of loved ones to hold on to the person they once knew can create stress and tension in relationships. Many people feel there is a lack of understanding among those closest to them about their experiences and an unwillingness to learn more about the illness. This can create feelings of rejection, leading to increased isolation and loneliness^[19].

Some people find psychotherapy helpful in processing these emotions and developing coping strategies. Support groups—whether in-person or online—can also provide valuable connections with others who truly understand what living with an immune system disorder is like. These resources remind patients that they are not alone in their journey.