Case Scenario: Baby S (a 3-month old baby boy) was brought to the clinic by his foster mother. He has been in her care only 24 hours and came with some problems due to lack of care. He has an inflamed bottom near his scrotum and anus. The foster mother states that he has been crying nearly continually since he came to her, and he is very uncomfortable when he urinates. He looks dehydrated as his lips are dry and skin appears dry. She has attempted to put some cream on the bottom, with no effect. Describe how a skin infection can be differentiate it from a system infection in terms of the pathophysiology and symptoms. Support your answer using specific facts, data, examples, and other information drawn from the textbook and at least one other supplemental source.