Which of the following is not a vitamin deficiency disease

Options

A. Addison's disease
B. Keratomalacia
C. Goitre
D. Xerophthalmia

Answer

To determine which of the following is not a vitamin deficiency disease, we need to analyze each option provided.

1. **Addison's Disease**: This condition is primarily caused by a deficiency of cortisol, which is a hormone produced by the adrenal glands. While it may be associated with other vitamin deficiencies, it is not directly caused by a deficiency of vitamins. Therefore, Addison's Disease is not a vitamin deficiency disease.

2. **Keratomalacia**: This is a condition that results from a deficiency of vitamin A. It leads to severe dryness of the cornea and can result in blindness. Thus, keratomalacia is indeed a vitamin deficiency disease.

3. **Goiter**: Goiter is an enlargement of the thyroid gland and is primarily caused by a deficiency of iodine, not a vitamin. Therefore, goiter is not classified as a vitamin deficiency disease.

4. **Xerophthalmia**: This condition is also related to a deficiency of vitamin A, leading to dryness of the conjunctiva and cornea. Thus, xerophthalmia is a vitamin deficiency disease.

After analyzing all the options, we conclude that the condition that is not a vitamin deficiency disease is **Goiter**.

**Final Answer**: Goiter

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