Fibrosis is a medical condition characterized by the excessive formation of scar tissue in organs or tissues. This process occurs when the body attempts to heal itself after injury or inflammation, leading to the accumulation of collagen and other proteins. Over time, this can disrupt normal function and structure, affecting organs such as the lungs, liver, and heart. Common causes of fibrosis include chronic diseases, infections, and exposure to harmful substances. For instance, pulmonary fibrosis affects the lungs, making it difficult to breathe, while liver fibrosis can result from conditions like hepatitis or alcohol abuse. Early detection and treatment are crucial to managing fibrosis effectively.