Serotonin
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  Serotonin



Serotonin

   A neurotransmitter important in filtering out information. If its levels are low, it can be the underlying cause of depression and violence.

RELATED TERMS
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Neurotransmitter
Specialized chemical messenger (eg, acetylcholine, dopamine, norepinephrine, serotonin) that sends a message from one nerve cell to another. Most neurotransmitters play different roles throughout the body, many of which are not yet known.

Depression
A mental state of depressed mood characterized by feelings of sadness, despair and discouragement. Depression ranges from normal feelings of the blues through dysthymia to major depression. It in many ways resembles the grief and mourning that follow bereavement, there are often feelings of low self esteem, guilt and self reproach, withdrawal from interpersonal contact and physical symptoms such as eating and sleep disturbances.



SIMILAR TERMS
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Serology
The study of the antigen-antibody reaction.

Seromycin
Seromycin is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): cycloserine.

Seronegative
Refers to arthritis and means that the patient does not have rheumatoid factor in the blood. A proportion of patients with rheumatoid arthritis are 'seronegative'.

Serophene
Serophene is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): clomiphene citrate.

Seroquel
Seroquel is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): quetiapine fumarate.

Serosa
Any serous membrane.

Serostim
Serostim is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): somatropin recombinant.

Serostim lq
Serostim lq is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): somatropin recombinant.

Serotonin Syndrome
Serotonin syndrome is a condition caused by an excess of serotonin in the brain. The effects of serotonin syndrome may progress from headaches, dizziness and vomiting, to coma and death.

Serous membrane
A thin membrane lining the closed cavities of the body; has two layers with a space between that is filled with serous fluid

Serov doctors
All doctors near Serov, Russia. Doctors who can assist a patient in Serov.



PREVIOUS AND NEXT TERMS
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Spermatozoon
(plural, spermatozoa) The male gamete; a haploid, usually small, flagellated cell.

Spermatozoa
(singular, spermatozoon) The male gamete; a haploid, usually small, flagellated cell.

Skin
Skin is an organ of the integumentary system; which is composed of a layer of tissues that protect underlying muscles and organs. Skin is used for insulation, vitamin D production, sensation, and excretion (through sweat).

Sex
An individual's gender classification - male or female.

Second Messenger
Molecules that are synthesized in response to hormones binding to their receptors. Second messengers initiate the biological action of the hormone.

Serotonin

Sibling
One of two or more individuals having at least one common parent.

Spinal cord
The ovoid column of nervous tissue, extending from the medulla to the second lumbar vertebra in the spinal canal. All nerves to the trunk and limbs issue from the spinal cord, the center of reflex action containing conducting paths to and from the brain. Sensory neurons enter posteriorly; motor nerves arise anteriorly.

Schizophrenia
Any of a group of psychotic disorders usually characterized by withdrawal from reality, illogical patterns of thinking, delusions, and hallucinations, and accompanied in varying degrees by other emotional, behavioral, or intellectual disturbances. Schizophrenia is associated with dopamine imbalances in the brain and defects of the frontal lobe and is caused by genetic, other biological, and psychosocial factors. It is mainly treated by antipsychotic drugs which block Dopamine receptors such as Haloperidol.

Sinusitis
Inflammation of the sinuse (hollow spaces in the bone of the cheeks and forehead), due to an infection or an allergic reaction. Probably the most common cause of pain in and around the eye. Symptoms include head pain (headache, pain around the eyes, toothache, jaw pain), nasal discharge, postnasal drip, coughing, eyelid swelling, swelling around the eyes, a stuffy nose, fatigue, bad breath and a sore throat.

Spasticity
Involuntary muscle tightness and stiffness that occurs in about two-thirds of people with cerebral palsy and in many who suffer severe head injuries. The medical definition of dystonia is a velocity-dependent, increased resistance to passive muscle stretch. In other words, when a muscle affected by spasticity is stretched by someone else, it is harder to move the muscle than normal, and the faster one pushes, the harder the muscle is to move.

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