Immunodeficiency Presenting as an Undiagnosed Disease

Area of Science:

• Immunology
• Clinical Medicine
• Genetics

Background:

• Primary immunodeficiencies (PIDs) are a group of inherited disorders that impair the immune system.
• While infections are the hallmark of PIDs, autoimmune manifestations are also common.
• Autoimmunity can sometimes be the first sign of an underlying PID.

Purpose of the Study:

• To highlight the significance of autoimmune manifestations in the diagnosis of primary immunodeficiencies.
• To emphasize that autoimmune disorders can precede or mimic typical infectious presentations of PIDs.
• To guide clinicians in considering PIDs in patients with complex autoimmune or atopic conditions.

Main Methods:

• This abstract is based on a review of clinical presentations and diagnostic considerations for primary immunodeficiencies.
• It synthesizes information regarding the co-occurrence of PIDs with autoimmune and atopic diseases.
• The focus is on clinical pattern recognition for diagnostic suspicion.

Main Results:

• Autoimmune manifestations are frequent in patients with primary immunodeficiencies.
• These autoimmune conditions can be the initial clinical presentation, preceding or overshadowing infections.
• The presence of multiple autoimmune disorders or severe atopic disease is a key indicator.

Conclusions:

• Clinicians should maintain a high index of suspicion for primary immunodeficiencies in patients presenting with autoimmune disorders.
• A combination of two or more autoimmune diseases, severe atopy, or both warrants consideration of PIDs.
• Recognizing these non-infectious presentations is crucial for timely diagnosis and management of PIDs.