Symptoms are subsiding, but once again I cannot tell for certain whether the treatment is helping, or if the pain and swelling would have reduced on their own, as they have in the past. One thing I am wondering about: since the scrotum and testicles have somewhat separate blood circulation, how can arnica that I apply to my scrotum get to my testicles? Does anyone have any experience using arnica rub for painful, swollen testicles?