<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, my infant son seems very irritable lately. He also has pus draining from his ear and I noticed a mass in his scrotum. What could be causing this?  <response>: Based on those symptoms, its possible that your son has cryptorchidism. This is a condition where the testicles do not descend into the scrotum and can lead to infections and other complications. 