Each of these options has a pair of diseases. Which option has one of these diseases is caused due to hypersecretion of a hormone and the other one is caused due to hyposecretion of the same hormone. Which one doesn't have this kind of pair ?

Options

A. Acromegaly and Dwarfism
B. Myxoedema and Thyrotoxicosis
C. Hypoglycemia and Hyperglycemia
D. Tetanus and Tetany

Answer

To solve the question, we need to analyze each option and identify whether the diseases listed in each pair are caused by hypersecretion and hyposecretion of the same hormone.

### Step-by-Step Solution:

1. **Option A: Acromegaly and Dwarfism**
- **Acromegaly** is caused by hypersecretion of growth hormone (GH) from the pituitary gland.
- **Dwarfism** (specifically, pituitary dwarfism) is caused by hyposecretion of growth hormone (GH).
- **Conclusion**: This option has one disease caused by hypersecretion and the other by hyposecretion of the same hormone.

2. **Option B: Myxedema and Thyrotoxicosis**
- **Myxedema** is associated with hypothyroidism, which is due to hyposecretion of thyroid hormones.
- **Thyrotoxicosis** (or hyperthyroidism) is caused by hypersecretion of thyroid hormones.
- **Conclusion**: This option also has one disease caused by hypersecretion and the other by hyposecretion of the same hormone.

3. **Option C: Hyperglycemia and Hypoglycemia**
- **Hyperglycemia** is often caused by hypersecretion of insulin (or insufficient action of insulin).
- **Hypoglycemia** is caused by hyposecretion of insulin.
- **Conclusion**: This option has one disease caused by hypersecretion and the other by hyposecretion of the same hormone.

4. **Option D: Tetanus and Tetany**
- **Tetanus** is caused by a bacterial infection leading to muscle contractions and is not related to hormone secretion.
- **Tetany** can be caused by low calcium levels (hypoparathyroidism) but is not directly related to a specific hormone's hypersecretion or hyposecretion.
- **Conclusion**: This option does not have a pair of diseases caused by hypersecretion and hyposecretion of the same hormone.

### Final Answer:
The option that does not have a pair of diseases caused by hypersecretion and hyposecretion of the same hormone is **Option D: Tetanus and Tetany**.