Seasonal Affective Disorder: This is a depression that is associated with a particular time of year.

Self Esteem: How a person views themselves on an emotional level. See related article on Teen Self-Esteem

Self-Mutilation: The deliberate act of self injury without the intention of death.  Generally associated with mental illnesses.  The self injury may be to release endorphins or as punishment to oneself.  This includes cutting, self piercing, etc. See related article on Teen Self-Mutilation

Sexual Addiction: An addiction to sexual intercourse or masterbation, typically a person has an unusually intense sexual desire.

Sexual Intercourse: When a penis penetrates an orifice (mouth, vagina, anus) of another person. See related article Discussing the Birds and the Bees

Shyness: A lack of self confidence in social settings.  A fear of being embarrassed or being rejected by others.

Skag: A slang term for Heroin.

Smack: A slang term for Heroin.

Social Phobia: Social Phobia is also known as Social Anxiety Disorder.  Persons with this disorder feel as thought they are being watched, judged and looked upon with negativity.  This happens anytime the individual is in a social setting or situation.

Special K: Also known as Ketamine Hydrocholride.  Generally used as a animal tranquilizer during surgery. Special K is a hallucinogen frequently mixed with heroin, tobacco, cocaine and ecstasy.  Special K is also knows as Cat Valium, Green, Jet, K, Super C, Honey Oil and Super Acid.

STD's: Sexually Transmitted Diseases.  These are a group of diseases transmitted during sexual activity.  Genital Warts, Herpes, Gonorrhea, Crabs, Syphilis, Chlamydia. See related article Sexually Transmitted Diseases

Steps: A slang term for Heroin.

Steroids: Steroids come in two forms; Anabolic and Androgenic.  Anabolic Steroids are man made substances related to male sex hormones.  Anabolic Steroids are used in the building of muscle, however, there are certain dangers associated with the use of Steroids.  These dangers include, but are not limited to, liver problems, reproductive problems and aggression.  Steroids have been known to cause manic type mood swings that are associated with violence. 

Stress: A physiological or psychological response to external stimuli. See related article on Teen Stress

Stretch Marks: Stretch marks are also known as Striae Atrophica.  These are tiny bands of skin that are shiny or discolored.  These are caused by stretching or loosening of the elastic tissues.

Success: When a person reaches his or her goals or accomplishes an intended purpose. A state of prosperity.

Suicide: The act of taking one's own life. See related article on Teen Suicide

Syphilis: An STD which is characterized by a painless open soar on the penis or in or around the vagina.  If left untreated it will become worse and can even affect the heart and central nervous system.