May include:
 

· All kind of headaches

· Fatigue or drowsiness

· Problems with speech

· Dizziness / loss of balance / nausea,

· A state of being dazed / confused / disoriented / loss of coordination.

· Sensory problems, such as blurred vision, ringing in the ears, a bad taste in the mouth or changes in the ability to smell

· Sensitivity to light or sound

· Memory or concentration problems

· Mood changes or mood swings, feeling depressed or anxious

· Difficulty sleeping or sleeping more than usual

· Convulsions or seizures

· Weakness or numbness in fingers and toes

· Agitation, combativeness or other unusual behavior

· Slurred speech

· Hick-ups

. ...