[Name] Goblin Fever [Source] Dungeon Adventures #46, "Goblin Fever" [Symptoms] 
This disease is a relatively harmless ailment to goblins, orcs, and similar creatures, but it's rare. To humans, it's much deadlier. Having a long incubation period and being highly contagious, an outbreak can start before the first case is even detected. The disease causes deterioration of the central nervous system, causing forgetfulness and rapid mood swings, the victim often becoming violent, depressed, or even suicidal, eventually lapsing into a coma before dying.