For joint and muscle pain in your arm, you can apply a topical nonsteroidal anti-inflammatory (NSAID) gel, such as diclofenac, directly to the painful area to reduce local inflammation. For oral relief, generic ibuprofen or acetaminophen can help ease the pain; remember to take oral pain relievers with food. Additionally, resting the arm, applying a cold compress for 15 minutes several times a day, and avoiding movements that trigger the pain will support recovery. If your symptoms worsen or if you notice severe swelling or redness, please consult a healthcare professional for a tailored evaluation.