Acromegaly is caused by :

Options

A. Excess of growth hormone
B. Excess of thyroxin
C. Deficiency of thyroxin
D. Excess of adrenalin

Answer

**Step-by-Step Solution:**

1. **Understanding Acromegaly**: Acromegaly is a hormonal disorder that results from excess growth hormone (GH) in the body. This condition is characterized by the enlargement of bones and tissues, particularly noticeable in the face, hands, and feet.

2. **Identifying the Cause**: The primary cause of acromegaly is the overproduction of growth hormone, which is secreted by the anterior pituitary gland. This excess GH leads to the abnormal growth of bones and soft tissues.

3. **Evaluating the Options**:
- **Option 1: Excess of Growth Hormone** - This is the correct answer as it directly correlates with the cause of acromegaly.
- **Option 2: Excess of Thyroxine** - Thyroxine is involved in metabolism but does not cause acromegaly. Instead, excess thyroxine can lead to conditions like hyperthyroidism.
- **Option 3: Deficiency of Thyroxine** - A deficiency in thyroxine leads to myxedema, not acromegaly.
- **Option 4: Excess of Adrenaline** - Excess adrenaline can cause symptoms like increased heart rate and blood pressure but is not related to acromegaly.

4. **Conclusion**: After evaluating all the options, it is clear that the correct cause of acromegaly is the excess of growth hormone.

**Final Answer**: Acromegaly is caused by excess of growth hormone.

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