老人扶着胳膊感到整条手臂疼痛图片

An elderly Chinese man exhibits pain in his upper arm, specifically around the humerus. Infrared thermal imaging highlights the red area on his upper arm, indicating the pain location. The image is extremely clean, with a completely white background, no background clutter, and no decorative lines. The composition is complete, with the upper body fully visible without cropping, a 3:4 aspect ratio, commercial photography style, and a medical education style.