An 8-month-old infant consistently reaches for and grasps every object presented to him with his right hand, regardless of where the object is placed in his visual field. His parents report he was born at term with no complications. What does this finding indicate?
- A Asymmetry suggesting hemiparesis, likely cerebral palsy affecting the left side ✓
- B Normal transient preference that needs no evaluation
- C Advanced fine motor development for age
- D Genetically determined handedness requiring occupational therapy
Correct answer: A. Asymmetry suggesting hemiparesis, likely cerebral palsy affecting the left side
Explanation
Handedness is normally not established until after 12 to 18 months of age. C consistent, obligatory hand preference before the first birthday is a classic early red flag for contralateral hemiparetic cerebral palsy, because the affected arm is not used spontaneously even though passive movement may appear intact. This finding warrants neurological examination and MRI. Declaring it advanced development or a benign familial preference misses the window for early intervention, and true genetic handedness does not manifest this early.
Reference: Nelson Textbook of Pediatrics, 21st ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.