Genetic diseases are disorders caused by abnormalities in an individual's DNA. These abnormalities can be inherited from parents or occur spontaneously. Common examples include cystic fibrosis, sickle cell anemia, and Huntington's disease. Genetic diseases can affect various body systems and may lead to a range of symptoms, from mild to severe. Diagnosis of genetic diseases often involves genetic testing, which can identify specific mutations in genes. Treatment options vary depending on the disease and may include medications, therapies, or lifestyle changes. Research in genetics continues to advance, offering hope for better management and potential cures for these conditions.