"Lock jaw" is another name of

Options

A. Malaria
B. kala-azar
C. tetanus
D. Diphtheria

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Lock Jaw":** The term "lock jaw" is commonly used to describe a specific medical condition. It is important to identify which disease or condition this term refers to.

2. **Analyzing the Options:** The question provides four options:
- Malaria
- Kala Azar
- Tetanus
- Diphtheria

3. **Identifying the Correct Condition:**
- **Malaria:** This is a disease caused by parasites transmitted through the bites of infected mosquitoes. It does not relate to muscle stiffness or locking of the jaw.
- **Kala Azar:** Also known as visceral leishmaniasis, this is caused by a parasite and does not cause lock jaw.
- **Tetanus:** This is an infection caused by the bacterium *Clostridium tetani*. It leads to muscle stiffness and painful contractions, particularly affecting the jaw and neck muscles, which is why it is referred to as "lock jaw."
- **Diphtheria:** This is a bacterial infection that affects the mucous membranes of the throat and nose and does not cause lock jaw.

4. **Conclusion:** Based on the analysis, the correct answer is "tetanus," as it is the condition that is commonly referred to as "lock jaw" due to the symptoms it causes.

5. **Final Answer:** The correct option is **tetanus**.

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