Candida infection is predisposed by all, except –
**Core Concept**
Candida infection is a type of opportunistic fungal infection that is often caused by the organism Candida albicans. The predisposition to Candida infection involves a combination of host factors, environmental factors, and the virulence of the organism itself. In this context, the host's immunocompetence, mucosal barrier integrity, and exposure to antibiotics or other antifungal agents play a crucial role.
**Why the Correct Answer is Right**
Candida albicans is a commensal organism that normally resides on the skin and mucous membranes. However, when the host's immune system is compromised, such as in diabetes mellitus or HIV/AIDS, Candida albicans can overgrow and cause infection. Additionally, the use of broad-spectrum antibiotics can disrupt the normal flora of the gut, leading to an overgrowth of Candida albicans. Furthermore, the presence of a central venous catheter or other prosthetic devices can also increase the risk of Candida infection.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because diabetes mellitus is a well-established risk factor for Candida infection, particularly oral candidiasis (thrush) and vulvovaginal candidiasis.
* **Option B:** This option is incorrect because HIV/AIDS is a significant risk factor for Candida infection, particularly esophageal candidiasis.
* **Option C:** This option is incorrect because the use of broad-spectrum antibiotics is a common predisposing factor for Candida infection.
**Clinical Pearl / High-Yield Fact**
Candida albicans can cause a range of clinical manifestations, from mild mucocutaneous infections to life-threatening invasive candidiasis. The use of antifungal agents, such as fluconazole, is often necessary to treat Candida infections, particularly in immunocompromised patients.
**Correct Answer:** D