What is the common presenting infection in patients with chronic granulomatous disease?

• A. Chronic pneumonia
• B. Occult sepsis
• C. Skin abscesses
• D. Gastroenteritis

Answer: (A)

In patients with chronic granulomatous disease (CGD), the immune system is impaired due to a deficiency in the NADPH oxidase enzyme complex, which leads to an inability to effectively kill certain bacteria and fungi. As a result, these patients are particularly susceptible to infections by catalase-positive organisms, which include certain species of Staphylococcus, Aspergillus, and others.

The common infections in CGD are characterized by the formation of abscesses and pneumonia. While chronic pneumonia may be a presenting symptom in some cases, skin abscesses are one of the most prevalent manifestations of infection in these patients.

Skin abscesses tend to form when the body attempts to fight off repeated skin infections that may be caused by these difficult-to-eradicate pathogens. Thus, the correct consideration is that skin abscesses reflect the hallmark of infections seen in CGD rather than chronic pneumonia, which may not always be the primary or most common presenting scenario.

Occult sepsis and gastroenteritis are less typical presentations in this condition. Occult sepsis may occur, but it is not as characteristic as the skin abscesses seen in CGD. Gastroenteritis is not a specific feature of CGD infections either.

Overall, while chronic