Deficenecy of VIII factor leads to

Options

A. Haemophilia A
B. Haemophilia B
C. Haemophilia C
D. Haemophilia D

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks what condition arises from a deficiency of factor VIII.

2. **Identify Factor VIII**: Factor VIII is a crucial blood clotting protein. It plays an essential role in the coagulation cascade, which is necessary for blood clotting.

3. **Function of Factor VIII**: Factor VIII helps in the formation of blood clots by facilitating the conversion of prothrombin to thrombin, which is vital for clot formation.

4. **Consequences of Deficiency**: When there is a deficiency of factor VIII, the blood clotting process is impaired. This means that when a blood vessel is injured, the body is unable to form a clot effectively, leading to prolonged bleeding.

5. **Identify Related Conditions**: There are different types of hemophilia associated with deficiencies of specific clotting factors:
- Hemophilia A: Caused by a deficiency of factor VIII.
- Hemophilia B: Caused by a deficiency of factor IX.
- Hemophilia C: Caused by a deficiency of factor XI.
- Hemophilia D: Caused by a deficiency of factor XII.

6. **Conclusion**: Since the deficiency in question is specifically for factor VIII, the condition that results from this deficiency is Hemophilia A.

7. **Final Answer**: Therefore, the correct answer to the question is Hemophilia A.

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