<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi Dr. Rynne. I have a patient who has ED. He was in a VERY severe MVA and following the MVA he now has ED. He was seen by endocrinology and was given a clean bill of health there. The endocrinologist thinks it is neurological and involves the pudendal nerve. The patient has been seen by a urologist who has completed urological diagnostics, urine residual was 300 cc s with total volume of 1100 cc s. Kidney function tests were WNL. My question is, where to go from here? Is there a neurology specialty which deals with a situation like this and where would an expert be if one exists. We are in Detroit, MI area. Thank you so much!  <response>: Hi and welcome to Chat Doctor. Thank you for your query. I understand your concerns and I will try to help you as much as I can. Erection problems can have many causes. These include:Physical problems, such as injury to nerves or loss oxblood supply to the penis. Other health problems, such as diabetes, high blood pressure, anxiety, and depression. Side effects of certain medicines. Stress. Chat Doctor. The exam, lab tests, and sometimes mental health tests can help find out the cause of the problem. Treatment is based on cause and include avoiding tobacco and 