When the immune system makes a mistake and attacks itself this is called an?

When the immune system makes a mistake and attacks itself, this is called an autoimmune disorder. In these conditions, the body's immune system mistakenly identifies its own cells and tissues as foreign invaders, leading to inflammation and damage. Common examples include rheumatoid Arthritis, lupus, and multiple sclerosis. These disorders can vary widely in symptoms and severity, often requiring ongoing management and treatment.