Which of the following is a common symptom of pediatric patients with hemophilia?

Easy bruising is a hallmark symptom of hemophilia, particularly in pediatric patients. Hemophilia is a genetic bleeding disorder that affects the blood's ability to clot due to deficiencies in specific clotting factors. As a result, children with hemophilia may bruise easily or develop large bruises from minor injuries that might not affect others in the same way. This occurs because their blood does not coagulate properly, leading to prolonged bleeding and the accumulation of blood under the skin, which manifests as bruising.

The other options, while they may be associated with other medical conditions, do not specifically characterize hemophilia in pediatric patients. For instance, frequent infections may suggest an underlying immunodeficiency or another health issue but are not typical of hemophilia. Excessive fatigue can occur in various conditions, including those that involve anemia or chronic illness, and growth spurts are normal developmental stages that do not directly correlate with the symptoms of hemophilia. Thus, easy bruising remains the distinct and commonly observed symptom of this disorder in children.