Back to TopCauses. Injury or surgery involving the leg, ankle, or foot can cause swelling. Swelling may also occur after pelvic surgery, especially for cancer. Long airplane flights or car rides, as well as standing for long periods of time, often lead to some swelling in the feet and ankles.
Medical Definition of Serotonin. Serotonin: A neurotransmitter that is involved in the transmission of nerve impulses. Serotonin can trigger the release of substances in the blood vessels of the brain that in turn cause the pain of migraine. Serotonin is also key to mood regulation; pain perception; gastrointestinal function, including perception of hunger and satiety; and other physical functions.
Serotonin Syndrome: Introduction. Serotonin Syndrome: The toxic reaction of the body to the substance, possibly via allergic reaction or overdose. More detailed information about the symptoms, causes, and treatments of Serotonin Syndrome is available below. Click to Check.