Neurological

Mental cloudiness, difficulty concentrating

Feeling lightheaded, unsteady, or like the room is spinning

Tension headaches, general head pain

Difficulty falling or staying asleep

Trouble remembering things or forgetfulness

Severe recurring headaches with aura

Burning, tingling, or shooting pain from nerve damage

Loss of feeling or pins-and-needles sensation

Uncontrollable urge to move your legs, especially at night

Sudden bursts of electrical activity in the brain

Problems with sleep quality, sleepwalking, or night terrors

Involuntary shaking of hands, head, or other body parts