Appearance of dry, scaly lesions on various parts of the body such as skin, nails and scalp are the main symptoms of disease caused by?

Options

A. Microsporum
B. Trichophyton
C. Epidermophyton
D. All of these

Answer

To solve the question regarding the appearance of dry, scaly lesions on various parts of the body such as skin, nails, and scalp, we need to identify the cause of these symptoms. Here’s a step-by-step breakdown:

1. **Identify the Symptoms**: The symptoms described are dry, scaly lesions on the skin, nails, and scalp. These symptoms are commonly associated with certain skin infections.

2. **Consider Possible Causes**: The symptoms mentioned are indicative of a fungal infection. Fungal infections can lead to the development of scaly lesions on various parts of the body.

3. **Recognize the Fungal Infections**: One of the most common fungal infections that causes such symptoms is known as "ringworm." Despite its name, ringworm is not caused by a worm but by a group of fungi.

4. **Identify the Fungal Genera**: The main genera of fungi that cause ringworm (tinea) infections include:
- **Trichophyton**
- **Microsporum**
- **Epidermophyton**

5. **Conclusion**: Since all three genera (Trichophyton, Microsporum, and Epidermophyton) are known to cause the symptoms described in the question, the answer is that the disease can be caused by any of these fungi.

### Final Answer:
The disease characterized by dry, scaly lesions on the skin, nails, and scalp is caused by fungi from the genera Trichophyton, Microsporum, and Epidermophyton.