To make up for the scarcity of healing spells and restorative magic, the natural healing rate is accelerated.
Natural Healing: With a full night’s rest (8 hours of sleep or more), a character recovers hit points equal to 3 + character level + Constitution bonus. Any significant interruption during the character’s rest prevents the character from healing that night. If the character undergoes complete bed rest for an entire day and night, he recovers twice the normal amount.

With a Heal skill check (DC 15) that takes 1d6 minutes to perform, a character may provide short-term care for a wounded creature, restoring a number of hit points equal to 3 + character level + Constitution bonus. A creature can only benefit from such care once per day.

A skilled healer can increase the healing by 1 hit point for each DC of 5 they surpass DC 15.

Ability Damage: Ability damage is healed at a rate of 1 point per hour of rest for each damaged ability score, except when the ability damage is suffered through disease, in which case the lost ability points return only after the character has recovered from the disease.