I would definitely tell the parents that a visit to the "Dr." is warranted. I have an issue in the past 1 1/2 years where I told a parent they should see a Dr. They just recently saw a Nurse Practitioner "not" a Dr. or specialist. I believe in Nurse Practictioner whole heartedly but not in place of a Dr. or specialist for a specific problem such as I dealt with or you are dealing with. Good luck. Be strong and forceful if necessary - for the child's sake.