Medicine

Medicine in Book II and Book III, or Survival in Book I, is a skill that combines with Endurance to determine the rate at which Hit Points recover.

Mechanic
Druid axiom characters gets a bonus while above ground and takes a penalty while below ground.

Note: Character can never recover more than 1 HP per round.

Book I
To calculate the character's HP recovery rate, for Non-Druid characters: "No. of round(s) to recover 1 HP = 61 - (Endurance + Survival)"

For Druid characters, above ground: "No. of round(s) to recover 1 HP = 36 - 0.6 * (Endurance + Survival)"

Below ground: "No. of round(s) to recover 1 HP = 91 - 1.5 * (Endurance + Survival)"

Book II and Book III
To calculate the character's HP recovery rate, add their Endurance and Medicine values, subtract the total from 50, and the result is the number of rounds it takes them to recover 1 HP.

True Druids and Wiccans - characters with the Healer class and Druidic axiom - are automatically given the Medicine skill during Character Creation.

Skill book

 * Encyclopedia of Health & Practices (Book II and Book III)

Trainer

 * Madam Gilda (Book III)