Serotonin syndrome. Serotonin syndrome is a potentially life-threatening drug reaction that may occur following therapeutic drug use, inadvertent interactions between drugs, overdose of particular drugs, or the recreational use of certain drugs. The excess serotonin activity produces a spectrum of specific symptoms including cognitive, autonomic, and somatic effects. The symptoms may range from barely perceptible to fatal. Numerous drugs and drug combinations have been reported to produce serotonin syndrome.
middle finger (plural middle fingers) 1  The finger between the forefinger and the ring finger; this is the longest finger. 2  An obscene gesture directed towards another as an insult: a literal or sometimes figurative raising of the middle finger at someone.
The middle finger, long finger or tall finger is the third digit of the human hand, located between the index finger and the ring finger. It is usually the longest finger. In anatomy, it is also called the third finger, digitus medius, digitus tertius or digitus III. In Western countries, extending the middle finger (either by itself, or along with the index finger in the United Kingdom: see V sign) is an offensive and obscene gesture, widely recognized as a form of insult (colloquially known as flipping the bird, flipping someone off, or simply giving the finger). The middle finger is often used for finger snapping together with the thumb.