side effect

negative effect that may be caused due to use of medicine; typical accompanying effect

Side Effect was a soul musical group that recorded between 1972 and 1995. The group formed in Los Angeles in May 1972, when they started out as an all male trio and consisted of Louis Patton, Gregory Matta and leader Augie Johnson.
See more at Wikipedia.org...

Side effect can mean:Adverse drug reaction, an unintended consequence specifically arising from drug therapyTherapeutic effect, a desirable consequence of any kind of medical treatment, even though resulting as an unintended, unexpected consequence of the treatmentAdverse effect (medicine), an unintended, and undesirable, consequence of any kind of medical treatmentUnintended consequence, an effect that is unforeseen, regardless of type or qualityExternality, an economic term for the effects of a transaction on parties who did not make the original agreement.Side effect (computer science), a state change caused by a function or expressionSide Effects (2005 film), starring Katherine Heigl, a satirical look at the pharmaceutical industry.Side Effects, a collection of short stories by Woody AllenSide Effects (TV series), a Canadian TV seriesThe Side Effects, a 1980s indie rock bandSide Effect, a 1970s soul band
See more at Wikipedia.org...

A problem that occurs when treatment affects healthy tissues or organs. Some common side effects of cancer treatment are fatigue, pain, nausea, vomiting, decreased blood cell counts, hair loss, and mouth sores.

A language construct that modifies the state of the system. The most common side-effects are assignment, input and output. A language without side-effects is purely-functional - execution consists of the evaluation of an expression and all subexpressions are referentially transparent.
(1995-02-16)

A problem caused by treatment. For example, medicine you take for high blood pressure may make you feel sleepy. Most treatments have side effects.