Which of the following is caused due to hypersecretion of thyroxine hormone ?

Options

A. Goitre
B. Exophthalmic goitre
C. Cretinism
D. Myxoedema

Answer

To determine which condition is caused by the hypersecretion of the thyroxine hormone, we will analyze the options and understand the effects of thyroxine.

### Step-by-Step Solution:

1. **Understand Thyroxine Hormone**:
- Thyroxine (T4) is a hormone produced by the thyroid gland that regulates metabolism, growth, and development.

2. **Define Hypersecretion**:
- Hypersecretion refers to the excessive production of a hormone. In this case, it means that the thyroid gland is producing too much thyroxine.

3. **Identify Conditions Related to Thyroxine Levels**:
- **Hyposecretion** of thyroxine leads to conditions like goiter and myxedema.
- **Hypersecretion** of thyroxine can lead to conditions such as exophthalmic goiter (also known as Graves' disease).

4. **Analyze the Options**:
- **Goiter**: This condition is associated with the hyposecretion of thyroxine, not hypersecretion.
- **Exophthalmic Goiter**: This condition is indeed caused by hypersecretion of thyroxine. It is characterized by an overactive thyroid and is often associated with autoimmune disorders where antibodies mimic TSH (Thyroid Stimulating Hormone).
- **Cretinism**: This condition is related to severe hypothyroidism during infancy or childhood, leading to stunted growth and development.
- **Myxedema**: This is a severe form of hypothyroidism in adults, not related to hypersecretion.

5. **Conclusion**:
- The correct answer is **Exophthalmic Goiter**, as it is the condition caused by the hypersecretion of thyroxine hormone.

### Final Answer:
The condition caused due to hypersecretion of thyroxine hormone is **Exophthalmic Goiter**.

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