Low `Ca^(+)` in the body fluid may be the cause of

Options

A. Gout
B. Tetany
C. Anaemia
D. Angina pectoris

Answer

To answer the question "Low `Ca^(+)` in the body fluid may be the cause of", we will analyze the options provided and understand the physiological role of calcium in the body.

### Step-by-Step Solution:

1. **Understanding Calcium's Role**:
- Calcium ions (`Ca^(+)`) play a crucial role in various physiological processes, particularly in muscle contraction and neural transmission. They are essential for the proper functioning of muscles and nerves.

2. **Identifying the Symptoms of Low Calcium**:
- When there is a deficiency of calcium in the body fluids, it can lead to symptoms such as muscle spasms and cramps. This condition is known as tetany, which is characterized by involuntary muscle contractions.

3. **Evaluating the Options**:
- **Gout**: This condition is related to high levels of uric acid in the blood, not calcium levels. Therefore, it is not caused by low calcium.
- **Tetany**: As discussed, low calcium levels can lead to muscle spasms and cramps, which is a hallmark of tetany. This is a strong candidate for the correct answer.
- **Anemia**: This condition is primarily associated with low iron levels in the blood, not calcium. Thus, it is not related to low calcium.
- **Angina Pectoris**: This condition involves chest pain due to reduced blood flow to the heart muscle, which is not directly related to calcium levels.

4. **Conclusion**:
- Based on the analysis, the correct answer is **Tetany**. Low calcium levels in the body fluids can indeed lead to this condition due to the resulting muscle spasms.

### Final Answer:
Low `Ca^(+)` in the body fluid may be the cause of **Tetany**.