A disease found only in males is
(a) Gaucher's disease
(b) Lesch Nyhan disease
(c) Hunter 's disease
(d) Fabry's disease

Options

A. Gaucher's disease
B. Lesch Nyhan disease
C. Hunter 's disease
D. Fabry's disease.

Explanation

To solve the question "A disease found only in males is", we will analyze each option provided:

### Step-by-Step Solution:

1. **Understanding the Question**:
- We need to identify which of the listed diseases occurs exclusively in males.

2. **Analyzing Option (a): Gaucher's disease**:
- Gaucher's disease is caused by a mutation in the GBA gene, leading to a deficiency in the enzyme glucocerebrosidase.
- This disease can affect both males and females, so it is not exclusive to males.
- **Conclusion**: Not the correct answer.

3. **Analyzing Option (b): Lesch-Nyhan disease**:
- Lesch-Nyhan disease is an X-linked recessive disorder, primarily affecting males.
- It is characterized by neurological and behavioral issues, including self-mutilation and gout-like symptoms.
- Females can be carriers but typically do not express the disease unless they have two copies of the mutated gene (which is rare).
- **Conclusion**: This is the correct answer as it primarily affects males.

4. **Analyzing Option (c): Hunter's disease**:
- Hunter's disease is an X-linked recessive disorder, but it can affect both males and females.
- It is caused by a deficiency in the enzyme iduronate-2-sulfatase.
- **Conclusion**: Not the correct answer.

5. **Analyzing Option (d): Fabry's disease**:
- Fabry's disease is also an X-linked disorder, but it can affect both males and females.
- It is caused by a deficiency in the enzyme alpha-galactosidase A.
- **Conclusion**: Not the correct answer.

### Final Answer:
- The disease found only in males is **(b) Lesch-Nyhan disease**.