Final answer:
For diagnosing pain, methods like X-ray and MRI are commonly used, providing detailed internal views of the body, while physical examinations can assess pain symptomatically.
Step-by-step explanation:
Methods used for diagnosing pain in patients include various medical imaging techniques and physical examinations. Key examples would be X-ray, which is commonly used for diagnosing conditions like renal calculi and joint issues, and Magnetic resonance imaging (MRI), which offers detailed images of internal structures and is especially useful for diagnosing joint inflammation and soft tissue conditions. Another method is the physical examination, where a clinician may look for signs of pain and discomfort. Methods such as blood pressure measurement, Electrocardiogram (ECG), and Urinalysis are diagnostic tools, but they are not typically used for diagnosing pain directly.