1 Infections (rare causes of acute pancreatitis) - examples of bacterial infections include: Salmonellosis, a type of food poisoning caused by the bacterium Salmonella, or Legionnaires' disease, an infection caused by the bacterium Legionella pneumophila found in plumbing, shower heads and water-storage tanks.
Stimulants are drugs that speed up the activity of the central nervous system. Stimulants are useful in treating many medical conditions, including ADHD, narcolepsy, asthma, obesity, and depression. There are several types of stimulants, including caffeine, nicotine, cocaine, amphetamines, and methamphetamines.
The most stimulating ones are those that belong to the amphetamine class to which MDMA (ecstacy) and speed (either amphetamine or methamphetamine, depending on your region) also belong. Most synthetic and semi-synthetic hallucinogens are stimulants in varying degrees.