The user squeezes the target's head and applies painful pressure. The higher the target's Special Attack, the greater the damage.
The user grabs the opponent's head and squeezes hard, applying intense pressure and waves of irritating psychic energy. The bigger the target's brain and the greater its mental potency, the more crushing the resulting headache.
Power increases with the target's current Special Attack (not including stat boosts), given by target's Special Attack / 2, to a maximum of 150. Power bottoms out at 1.