One of the following is not a common disor- der associated with digestive system.

Options

A. Tetanus
B. Diarrhoea
C. Jaundice
D. Dysentery

Answer

To solve the question, "One of the following is not a common disorder associated with the digestive system," we will analyze each option provided:

1. **Tetanus**: Tetanus is caused by the bacterium *Clostridium tetani*, which enters the body through wounds or cuts. It primarily affects the nervous system and causes muscle stiffness and spasms. It is not associated with the digestive system.

2. **Diarrhea**: Diarrhea is a common disorder of the digestive system, often caused by infections from contaminated food or water. It involves frequent, loose, or watery bowel movements.

3. **Jaundice**: Jaundice is related to liver function and is characterized by yellowing of the skin and eyes. Since the liver plays a crucial role in digestion (producing bile), jaundice is considered a disorder associated with the digestive system.

4. **Dysentery**: Dysentery is an intestinal infection that causes severe diarrhea with blood and mucus. It is also a common disorder of the digestive system, often caused by bacteria or parasites.

After analyzing these options, we can conclude that:

- **Correct Answer**: Tetanus is not a common disorder associated with the digestive system.

### Step-by-Step Solution:
1. **Identify the Disorders**: List the options provided and identify which are associated with the digestive system.
2. **Analyze Each Option**:
- Tetanus: Not associated with the digestive system.
- Diarrhea: Associated with the digestive system.
- Jaundice: Associated with the digestive system.
- Dysentery: Associated with the digestive system.
3. **Conclusion**: Determine which option is not related to the digestive system.
4. **Final Answer**: Tetanus is the correct answer.