with blood and mucus. Unless the fluid loss caused by the diarrhea is rapidly controlled,
dysentery can prove to be fatal after only a short period of time. Dysentery was common in the
crowded, unsanitary military camps of the 1700s and 1800s, as well as in many cities throughout
history, and major epidemics of dysentery were recorded before the cause of the disorder was
identified
Dysphoria: Feelings of sadness, sorrow, depression, etcand so on. The opposite of euphoria
Gamma-amino-butyric acid (GABA): During the period of embryonic brain development, GABA
serves as a stimulatory function, assisting in the development of neurons in the growing brain.
Following birth, GABA’s role changes until it becomes the brain’s main inhibitory
Amygdala: A region in the brain that is shaped like an almond, located in each temporal lobe.
This region is thought to be involved in the process of attaching emotional context to memory
and modulating emotional responses to external reality. This includes behaviors centered on the
process of obtaining reward(s), and the anxiety and panic responses
Prodrug (pro-drug): Compound that must be biotransformed into another compound to have
the desired effect
Torsade des pointes: Cardiac arrhythmia that is potentially fatal
Ventricular tachycardia: Cardiac arrhythmia in which the normal pattern of electrical discharge
and repolarization in the ventricles of the heart is interrupted, disrupting the normal heart
rhythm. This condition is potentially fatal if not immediately corrected
First-pass metabolism: Over time, the body has developed a safety mechanism in which
materials absorbed through the gastrointestinal tract are first carried to the liver, so that toxic
compounds ingested might be subjected to detoxification before they can injure the body
Discontinuance syndrome: The manifestations of the body’s reaction when a compound
regularly used as prescribed is either discontinued or markedly reduced. This is essentially a