Acromegaly/Gigantism is caused by

Options

A. Excess of S.T.H.
B. Excess of Thyroxin
C. Deficiency of Thyroxin
D. Excess of Adrenalin

Answer

### Step-by-Step Solution:

1. **Understanding Acromegaly and Gigantism**:
- Acromegaly and gigantism are conditions related to abnormal growth. Acromegaly occurs in adults, while gigantism occurs in children and adolescents before the growth plates close.

2. **Role of the Pituitary Gland**:
- The pituitary gland, often referred to as the "master gland," is responsible for producing several hormones, including the growth hormone (GH).

3. **Identifying the Hormone**:
- The growth hormone, also known as somatotropic hormone (STH), is secreted by the somatotroph cells in the anterior lobe of the pituitary gland.

4. **Effects of Excess Growth Hormone**:
- When there is an excess of growth hormone, it leads to the overgrowth of bones and tissues, resulting in the characteristic features of acromegaly (enlarged facial features, hands, and feet) and gigantism (excessive height).

5. **Conclusion**:
- Therefore, acromegaly and gigantism are primarily caused by the excessive secretion of somatotropic hormone (growth hormone) from the pituitary gland.

### Final Answer:
Acromegaly and gigantism are caused by excessive secretion of somatotropic hormone (growth hormone) from the pituitary gland.

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