See also: Character Combat
Striking for Damage with punches, kicks, and headbutts is essentially like Attacking with a Melee Weapon. Unarmed Attacks deal normal Bludgeoning Damage.
A Medium creature normally deals 1d4 points of Bludgeoning Damage (Plus Strength modifier) with a successful Unarmed Attack; A Small creature deals 1d3 points of Bludgeoning Damage (Plus Strength modifier). Certain Talents, Feats, or special abilities may increase the Damage a character deals with their Unarmed Attacks.