A 7-Month-Old Boy Is Brought to the Emergency Department by His

A 7-month-old boy is brought to the emergency department by his mother due to decrease his activity and difficult to awake him. Over the past 2 weeks, he has become increasingly irritable and within the past day has taken more daytime naps and appears much less responsive and interactive. His mother denies any history of fever or trauma at home. He appears lethargic. His temperature is 37.8°C (100.1°F) , pulse is 140/min, respirations are 18/min, and blood pressure is 90/55 mm Hg. The abdomen is soft and nontender. Auscultation of the heart and lungs shows no abnormalities. The anterior fontanelle is tense and bulging. Fundoscopic examination shows bilateral retinal hemorrhage. Which of the following should be strongly suspected in this patient?

A) Abusive head trauma
B) Bacterial meningitis
C) Idiopathic thrombocytopenic purpura
D) Neonatal vitamin K deficiency
E) Retinoblastoma
F) Unintentional head injury