A monk, a character with the Improved Unarmed Strike feat, a spellcaster delivering a touch attack spell, and a creature with natural physical weapons all count as being armed. Sometimes a characterРІР‚в„ўs or creatureРІР‚в„ўs unarmed attack counts as an armed attack.

An unarmed attack does not provoke attacks of opportunity from other foes nor does it provoke an attack of opportunity from an unarmed foe.Р”Р„n unarmed character canРІР‚в„ўt take attacks of opportunity (but see РІР‚СљArmedРІР‚Сњ Unarmed Attacks, below). The attack of opportunity comes before your attack. Striking for damage with punches, kicks, and head butts is much like attacking with a melee weapon, except for the following:Р”Р„ttacking unarmed provokes an attack of opportunity from the character you attack, provided she is armed. With a typical reach weapon, you can strike opponents 10 feet away, but you canРІР‚в„ўt strike adjacent foes (those within 5 feet). (Opponents within 5 feet are considered adjacent to you.) Some melee weapons have reach, as indicated in their descriptions. With a normal melee weapon, you can strike any opponent within 5 feet. 1.4.1.1 Using a Spell-Like Ability on the Defensive.1.3.2 Spell Trigger, Command Word, or Use-Activated Items.1.2.3 Concentrating to Maintain a Spell.1.1.9 Fighting Defensively as a Standard Action.1.1.8 Shooting or Throwing into a Melee.

Unarmed crit dmg 5e