One of my favorite herbs is arnica – the classic sunflower with yellow daisy-like flowers. Arnica is what I recommend for external use in injury from trauma, e.g., hematoma, dislocations, contusions, edema due to fracture, muscle and joint pain. Herbal preparations of arnica bring the best results when tested in lab studies. Used immediately after an injury, arnica helps speed the healing process by moving fluids through the injured area to bring cleansing fluids and platelets into the affected area wile blocking pro-inflammatory cytokines. Use arnica in short durations because it brings allergic skin reactions when overused.