Which of the following are incorrect?

Options

A. Increase in RBC count is polycythemia.
B. Decrease in leukocyte count is called leukopenia.
C. Decrease in thrombocyte count is called thrombocy- topenia.
D. Purpura (a group of bleeding disorders) is due to in- crease in platelet count.

Answer

To determine which of the statements provided are incorrect, we will analyze each statement one by one based on the definitions and explanations given in the video transcript.

### Step-by-Step Solution:

1. **Statement 1: Increase in RBC count is polycythemia.**
- **Analysis:** Polycythemia is indeed a condition characterized by an increased level of circulating red blood cells (RBCs) in the bloodstream. This statement is true.

2. **Statement 2: Decrease in leukocyte count is called leukopenia.**
- **Analysis:** Leukopenia refers to a condition where there is a reduced number of white blood cells (leukocytes), which increases the risk of infections. This statement is true.

3. **Statement 3: Decrease in thrombocyte count is called thrombocytopenia.**
- **Analysis:** Thrombocytopenia is defined as a condition in which there is a lower platelet count (thrombocytes). This condition can lead to difficulties in blood clotting. This statement is true.

4. **Statement 4: Purpura, a group of bleeding disorders, is due to an increase in platelet count.**
- **Analysis:** Purpura refers to purple spots on the skin caused by bleeding underneath. It is typically associated with low platelet levels, which can lead to excessive bruising and bleeding. Therefore, stating that purpura is due to an increase in platelet count is incorrect.

### Conclusion:
The only incorrect statement among the provided options is the last one: "Purpura, a group of bleeding disorders, is due to an increase in platelet count."

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