A viral disease causing painful swelling of parotid gland is

Options

A. Mumps
B. Measles
C. Chicken pox
D. Rabbies

Answer

**Step-by-Step Solution:**

1. **Identify the Symptoms**: The question asks about a viral disease that causes painful swelling of the parotid gland. The parotid gland is one of the major salivary glands located near the jaw.

2. **Consider the Options**: The options provided are:
- A. Mumps
- B. Missiles
- C. Chicken pox
- D. Rabies

3. **Recall the Characteristics of Each Disease**:
- **Mumps**: This is a viral infection caused by the mumps virus. It is known for causing swelling of the parotid glands, along with symptoms like fever, muscle pain, and headache.
- **Missiles**: This option seems to be a typographical error or irrelevant to viral diseases.
- **Chicken Pox**: Caused by the varicella-zoster virus, it primarily causes skin rashes and does not typically involve swelling of the parotid gland.
- **Rabies**: This is a viral disease that affects the nervous system and does not cause swelling of the parotid gland.

4. **Determine the Correct Answer**: Based on the symptoms and the characteristics of the diseases listed, mumps is the only viral disease that specifically causes painful swelling of the parotid gland.

5. **Conclude**: Therefore, the correct answer to the question is option A: Mumps.