Medicine

Medicine is a Fallout 3 skill that replaces the First Aid and Doctor skills from Fallout, Fallout 2 and Fallout Tactics. This skill was called Medic in Van Buren, the cancelled Fallout 3 by Black Isle Studios.

S.P.E.C.I.A.L. Statistic: Intelligence

The higher your Medicine skill, the more Health you replenish when using a Stimpak and any other medicinal item such as Rad-X, RadAway, etc. The exact effect of the Medicine skill is determined by game settings. See the talk page for details. this skill can be incrased by wearing Lincoln's Hat,Button's Wig and Environment Suit.

Medicine in Quests

 * 30 Medicine is required to properly examine the bodies of the West family for the Blood Ties quest in Arefu.
 * 40 Medicine is required to revive Timebomb in Bigtown, which is the only way to get his Lucky 8 Ball.
 * 50 Medicine is required to help a slave in The Mill inside The Pitt. I don't know what is the use of doing so, as you don't even have Karma.
 * 60 Medicine is required to revive Reilly in the Chop Shop in Underworld, which is one of two ways to revive her and start the Reilly's Rangers (quest).
 * The alternative way to revive Reilly is by passing a speech check with Doctor Barrows. The dialog will be available only after examining Reilly first.

Dialog
In certain cases having an average-high Medicine skill can give you extra dialog option, such as talking to the Doctor of Megaton