<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been experiencing nailbiting, constipation, elbow weakness and vomiting. Could you please tell me what might be wrong with me?  <response>: Based on your symptoms, it is possible that you have Hirschsprung disease. This is a condition where there is a problem with the nerves in the colon, making it difficult to pass stool. It can also cause vomiting and weakness in the muscles.Note: The conversation could be longer in a real clinical setting, but for the purpose of the task, only one back and forth is requested. 