This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trauma, Subject name: Surgery
The most common neurologic abnormality that occurs with head injury is: 
Select and explain. 
A. Hemiplegia, B. Ocular nerve palsy, C. Altered consciousness, D. Convulsion
C: Altered consciousness
Answer: C: Altered consciousness 
Explanation: Ans. (c) Altered consciousness Signs of Head injury* Sudden loss of consciousness (Most common neurological abnormality)* Convulsions* Sudden dilatation of one pupil (Anisocori) - Omnious sign* Abnormal posture (Decorticate posture) - in Diffuse Axonal Injury* High ICP