Final answer:
Ibrahim is experiencing right ear pain without systemic symptoms, suggesting a potential ear infection. Similar local signs are seen in Marisa and Olivia's cases, who both present with swollen lymph nodes and tenderness.
Step-by-step explanation:
The student has presented a case of a 10-year-old boy named Ibrahim with complaints of right ear pain lasting three days. The absence of other symptoms such as headache, nausea, vomiting, diarrhea, constipation, abdominal pain, or burning sensation upon urination might suggest that the issue is localized, potentially an ear infection like otitis media. This condition could be related to the cases of Marisa and Olivia, where both exhibited symptoms like swollen lymph nodes and discomfort, although their symptomatology varies due to different underlying conditions and patient ages.