Medical mystery

I made quite the startling diagnosis in clinic today. The patient was brought in by her mother with complaint of a fever 2 days earlier. She had also had some diarrhea but otherwise no complaints and no significant past medical history. Sound like a straight forward case of gastroenteritis, right? WRONG.
On physical exam, I could tell immediately that something about this patient was grossly abnormal. She stood 36in in stature at most, weighed 38lbs and appeared to be a stage I on the Tanner scale of sexual development. Her language and intellectual capacity also appeared to be markedly underdeveloped as she mostly appeared to understand what I was saying, but didn't speak throughout the whole encounter and was uncooperative during the physical exam.
Before going to present to my attending, I scoured the medical literature for what might cause the bizarre confluence of findings. And then, like a blot of lightening, it all made sense and I was able to confidently give the patient a diagnosis of...child!

Before today, I hadn't seen a pediatric patient since my first medical school rotation - now going on four years ago! It kind of throws you. If someone had brought in their cockatiel into the clinic for an evaluation, I'd have been just about equally flustered. To be fair, I actually had seen one or two pediatric patients during my tenure as an OB resident, mostly either for injury related to sexual abuse or to remove a foreign body. Those cases are kind of different though. OB's don't have to medically manage the patient. To us, she's just a minature vagina that has some strange creature attached to it.