Nail infection is caused by all of the following except:
**Core Concept**
Nail infections, also known as onychomycosis, are caused by various microorganisms including fungi, yeast, and bacteria. The most common causes are dermatophytes, a type of **fungus**.
**Why the Correct Answer is Right**
Since the correct answer is not provided, let's discuss the common causes of nail infections. Dermatophytes such as **Trichophyton rubrum** and **Trichophyton mentagrophytes** are the most common causes of onychomycosis.
**Why Each Wrong Option is Incorrect**
**Option A:** Not provided, but typically **Candida** species can cause nail infections.
**Option B:** Not provided, but **Aspergillus** species can also cause nail infections.
**Option C:** Not provided, but **Fusarium** species can cause nail infections.
**Option D:** Not provided, but typically **Pseudomonas** species can cause bacterial nail infections.
**Clinical Pearl / High-Yield Fact**
Onychomycosis can be classified into different types, including distal subungual, white superficial, proximal subungual, and total dystrophic onychomycosis.
**Correct Answer:** Not provided, as the options are missing.