Complication or complications may refer to:

Dramatic arts
"Complications" (CSI: Miami), an episode of CSI: Miami
"Complications" (Terminator: The Sarah Connor Chronicles), an episode of Terminator: The Sarah Connor Chronicles
Complications (TV series), a 2015 USA Network television series starring Jason OMara

Medicine
Complication (medicine), an unfavorable evolution of a disease, health condition or  medical treatment

Music
Albums
Complications - Trilogy of Intricacy, a 2005 EP by Norwegian progressive metal band Age of Silence
Complications (Dover album), a 2015 album by Spanish rock band Dover

Songs
"Complication", a 1999 song by Nine Inch Nails from The Fragile
"Complications", a 2008 song by deadmau5 from Random Album Title

Technology
Complication (horology), a clock display other than the time
Smartwatch complication Complication (horology)#Use in smartwatches
Mechanism
Implantation sites can be anywhere in the abdomen but can include the peritoneum outside of the uterus, the rectouterine pouch (culdesac of Douglas), omentum, bowel and its mesentery, mesosalpinx, and the peritoneum of the pelvic wall and the abdominal wall. The growing placenta may be attached to several organs including tube and ovary. Rare other sites have been the liver and spleen, giving rise to a hepatic pregnancy or splenic pregnancy, respectively. Even an early diaphragmatic pregnancy has been described in a patient where an embryo began growing on the underside of the diaphragm. Primary versus secondary implantation
A primary abdominal pregnancy refers to a pregnancy that first implanted directly in the peritoneum, save for the tubes and ovaries; such pregnancies are very rare, only 24 cases having been reported by 2007. Typically an abdominal pregnancy is a secondary implantation which means that it originated from a tubal (less common an ovarian) pregnancy and re-implanted. Other mechanisms for secondary abdominal pregnancy include uterine rupture, rupture of a uterine rudimentary horn and fimbrial abortion. Diagnosis
Suspicion of an abdominal pregnancy is raised when the fetal anatomy can be easily felt, or the lie is abnormal, the cervix is displaced, or there is failed induction of labor. X-rays can be used to aid diagnosis.