Shield bashing

Shield bashing is the act of attacking with a shield. To perform a shield bash, hold down the shift key and left-click the mouse to attack while having a shield equipped. The shield's Damage Reduction bonus is negated while Shield bashing.

The shield's shield bonus to Armor Class is negated while shield bashing unless you have the Improved Shield Bash feat.

If you have the Improved Shield Bash feat when auto-attack is on you will automatically bash while blocking if your target is close enough.