My 5 month old has been getting ring-like bruise on his left cheek, and his left arm. They are all the same size and perfectly round. Not sensitive to touch. I brought him to the hospital and they focused on child abuse or ?trauma. I'm a very protective mother and don't lose sight of him. There is no way he could've gotten these from trauma. They ran some blood test to check his platelets and coagulation and everything came back normal. I need to know what other things to ask of the doctor. I'm afraid they are placing so much emphasis on trauma and could overlook real possible medical explanations for this. I'm 100% sure it's not due to trauma. Please help me figure out what this could be. I'd just like to know what to ask his doctor it could be so that he could run other tests. He is otherwise normal. Happy and playful as always... No temperature and no changes in eating habits or anything.