Understanding Primary Immunodeficiency: A Guide for Parents

When your child is diagnosed with a primary immunodeficiency disease (PIDD), it can be overwhelming and concerning. This guide aims to provide you with a clear understanding of PIDDs, their causes, symptoms, diagnosis, and treatment options, as well as how to support your child through their journey.

What is Primary Immunodeficiency?

Primary immunodeficiency diseases are a group of more than 200 disorders that affect the body's immune system. Children with PIDDs have a harder time fighting off infections, which can lead to frequent and severe illnesses. Most cases are diagnosed in babies or young children, but sometimes the condition may not be apparent until adulthood.

Causes of PIDDs

PIDDs are not contagious like the common cold or flu. Instead, they are caused by genetic defects that affect the immune system. These genetic problems can be inherited from family members or occur spontaneously.

Symptoms of PIDDs

Symptoms of PIDDs may not be noticeable until your child is a few months old. Some common signs include:

• Four or more infections per year in the ears, lungs, skin, eyes, mouth, or private parts

• Need for intravenous antibiotics to treat infections

• Severe, fast-moving illnesses like septicemia (blood infection)

• Persistent thrush (fungal infection in the mouth)

• Pneumonia more than once a year

Diagnosing Primary Immunodeficiency

If you suspect your child may have a PIDD, your doctor will perform a physical exam and ask about your child's medical history. They may also order blood tests to analyze white blood cell counts and measure levels of immunoglobulins, which are proteins that fight disease.

Many states now screen newborns for severe combined immunodeficiency (SCID), the most severe type of PIDD.

Treatment Options for PIDDs

While infections are inevitable for children with PIDDs, treatments can help manage symptoms and prevent serious complications. Some common treatment options include:

Immunoglobulin (Ig) Replacement Therapy

This treatment involves administering disease-fighting proteins called antibodies through an intravenous (IV) infusion. Your child may need treatments every 3 to 4 weeks to maintain adequate antibody levels.

Stem Cell Transplant

In rare cases of severe PIDDs, a stem cell transplant may be necessary. This procedure involves replacing your child's defective immune system with healthy stem cells from a donor. Finding a suitable match is crucial for a successful transplant.

Supporting Your Child with a PIDD

Despite having a PIDD, your child can still lead a full and active life with proper care and support. Some tips to help your child thrive include:

• Communicating with your child's school about their condition and any special accommodations they may need

• Encouraging a healthy lifestyle with nutritious foods, regular exercise, and adequate sleep

• Practicing good hygiene, such as frequent handwashing, to prevent the spread of germs

• Managing stress through relaxation techniques, hobbies, and social support

Remember, you are not alone in this journey. Reach out to family, friends, and support groups for emotional support and guidance. The Immune Deficiency Foundation is an excellent resource for finding doctors, support groups, and information about clinical trials.

With the right treatment, care, and support, your child can live a happy and fulfilling life despite their primary immunodeficiency. Work closely with your healthcare team and seek out the resources and support you need to navigate this challenging but manageable condition.

For more information on primary immunodeficiency, visit:

• National Institute of Allergy and Infectious Diseases

• National Organization for Rare Disorders

• American Academy of Allergy, Asthma & Immunology