 Emergency department nurses will obtain a dehydration score when the patient is transferred to a treatment room time 0. Prior to initiation of treatment, and as close to the nurses Dehydration Score as is possible, a clinician Faculty, fellow, nurse practitioner or physician assistant will also score the patient as they arrive into the treatment area prior to initiation of treatment. Clinicians will be masked to the initial Dehydration Score as scored by the nurse. Subjects will continue to receive Dehydration Scores every hour after the initiation of treatment until a disposition has been determined i.e. discharge home or admit to hospital Times T1,2,3.... At discharge, or at time decision to admit has been made, the children will be weighed on the same scale as initially used. Subjects will be asked to return in 1 week - 3 days for wellness dehydration score, repeat weight same scale, and further continuation of historical and physical examination findings. Research or clinical nurse will obtain the final follow-up Dehydration Score. 