Inflammatory diseases are conditions where the body's immune system mistakenly attacks healthy tissues, leading to inflammation. This can cause pain, swelling, and damage to various organs. Common examples include rheumatoid arthritis, which affects the joints, and inflammatory bowel disease, which impacts the digestive system. These diseases can be triggered by various factors, including infections, allergens, or even stress. Treatment often involves medications that reduce inflammation and help manage symptoms. Lifestyle changes, such as a healthy diet and regular exercise, can also play a crucial role in managing these conditions and improving overall well-being.