Tinea Capitis is caused by all except
**Core Concept**
Tinea capitis, also known as ringworm of the scalp, is a fungal infection affecting the hair follicles of the scalp. It is caused by dermatophytes, a type of fungi that feed on keratin, a protein found in hair, skin, and nails.
**Why the Correct Answer is Right**
The most common causative agents of tinea capitis are Trichophyton tonsurans, Trichophyton violaceum, and Microsporum canis. These fungi infect the hair follicles, leading to hair loss, itching, and scaling. The infection typically spreads through direct contact with an infected person or contaminated objects.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it is not a typical causative agent of tinea capitis. However, it is worth noting that some species of Trichophyton, such as Trichophyton mentagrophytes, can cause tinea capitis, but it is less common.
**Option B:** This option is incorrect as it is not a common causative agent of tinea capitis. However, it can cause other types of fungal infections, such as tinea corporis or tinea pedis.
**Option C:** This option is incorrect as it is not a typical causative agent of tinea capitis. However, it is worth noting that some species of Microsporum, such as Microsporum gypsum, can cause tinea capitis, but it is less common.
**Clinical Pearl / High-Yield Fact**
It is essential to note that tinea capitis can be misdiagnosed as alopecia areata or other forms of hair loss. Therefore, a thorough medical history and physical examination are crucial in making an accurate diagnosis.
**Correct Answer:** D.