What is an autoimmune disease? Glucocorticoids are prescribed for treating autoimmune diseases. Give reason.

Explanation

### Step-by-Step Solution:

1. **Definition of Autoimmune Disease**:
An autoimmune disease is a condition in which the immune system mistakenly attacks the body's own healthy cells and tissues. Normally, the immune system protects the body from infections and diseases, but in autoimmune diseases, it fails to distinguish between foreign invaders and the body’s own cells.

**Hint**: Think about how the immune system usually works and what happens when it goes wrong.

2. **Examples of Autoimmune Diseases**:
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