Immune deficiencies in children: an overview

Area of Science:

• Immunology
• Pediatrics

Background:

• Primary immune deficiencies (PIDs) are a group of genetic disorders affecting the human immune system.
• PIDs lead to increased susceptibility to infections, autoimmunity, and malignancy.
• Diagnosing PIDs in children presents challenges due to varied presentations from birth to adolescence.

Purpose of the Study:

• To provide a foundational understanding of the human immune system.
• To outline clinical presentations in children that warrant investigation for PIDs.
• To propose a structured, stepwise approach for investigating PIDs in pediatric patients.

Main Methods:

• Review of the human immune system's basic principles.
• Identification of key clinical signs and symptoms indicative of PIDs in children.
• Development of a diagnostic framework for stepwise investigation.

Main Results:

• A clear explanation of the immune system relevant to PIDs.
• A list of pediatric presentations that should alert clinicians to consider PIDs.
• A practical, stepwise framework for the diagnostic workup of PIDs.

Conclusions:

• Early recognition and diagnosis of PIDs are vital to prevent severe morbidity and mortality.
• The proposed framework aims to assist pediatricians in investigating children with suspected PIDs.
• A systematic approach can improve the timely identification of primary immune deficiencies in pediatric care.