Back Packer's disease is

Options

A. Giardiasis
B. Amoebiasis
C. Ciliary diarrhoea
D. Visceral Leishmaniasis.

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Back Packer's Disease":** The term "Back Packer's disease" refers to a specific illness commonly associated with individuals who engage in outdoor activities such as hiking and camping.

2. **Identifying the Cause:** This disease is typically contracted through the consumption of unsafe water, which is often found in remote areas where back packers may not have access to clean drinking water.

3. **Recognizing Symptoms:** The illness is characterized by gastrointestinal symptoms, including diarrhea, which can be severe and lead to dehydration if not treated.

4. **Linking to the Correct Disease:** The disease most commonly associated with these symptoms and circumstances is Giardiasis. Giardiasis is caused by the protozoan parasite Giardia lamblia, which is often present in contaminated water.

5. **Conclusion:** Therefore, the correct answer to the question "Back Packer's disease is" is Giardiasis.

**Final Answer:** Giardiasis

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