Explanation:
The information that is provided to you is very limited, and could be due to many different causes. Much more information is needed to understand the progression of the illness as well as any other symptoms that were not disclosed upon admission to the emergency department.

Information such as travel history, sick contacts, preceding prodrome and immunizations all provide information as to whether Owe may have an infection causing his symptoms. If Owen has not been immunized, he is at an increased risk of picking up certain infections that other children are immune to. Similarly, if Owen has traveled recently, there is an increased risk of acquiring an infection not commonly encountered in the area that he currently lives.

Questions related to vomiting, diarrhea, lethargy, weight loss, changes in bowel habits and changes in eating habits all provide information regarding the acuity of Owen's presentation. If enough time has elapsed to cause weight loss, the presenting complaint may be more of a chronic problem. Additionally, changes in eating habits and bowel habits provide information about Owen's health before this presentation, as well as information about his hydration status.

Although it would be unlikely to cause fever, a food hypersensitivity could cause a rash in response to a food that was recently introduced into the diet. Any change in diet must therefore be documented.

Gestational and delivery history, family history of cancer, developmental milestones would not be relevant to this case. Exposure to cigarette smoke may irritate pre-existing asthma or other cause other respiratory symptoms, but would be unlikely to cause fever and a rash.