Category: Sa-Sf
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Selective serotonin reuptake inhibitor
A selective serotonin reuptake inhibitor (SSRI) is one of the commonly prescribed drugs for treating depression. SSRIs affect the chemicals that nerves in the brain use to send messages to one another. These chemical messengers, called neurotransmitters, are released by one nerve and taken up by other nerves. Neurotransmitters that are not taken up by other nerves…
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Seizure disorders
One of a great many medical conditions that are characterized by episodes of uncontrolled electrical activity in the brain (seizures). Some seizure disorders are hereditary, but others are caused by birth defects or environmental hazards, such as lead poisoning. Seizure disorders are more likely to develop in patients who have other neurological disorders, psychiatric conditions, or immune-system problems. In some cases, uncontrolled…
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Seizure
Uncontrolled electrical activity in the brain, which may produce a physical convulsion, minor physical signs, thought disturbances, or a combination of symptoms. The type of symptoms and seizures depend on where the abnormal electrical activity takes place in the brain, what its cause is, and such factors as the patient’s age and general state of health.…
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Sedimentation rate
A blood test that detects and monitors inflammation in the body. Abbreviated sed rate. The sed rate measures the rate at which red blood cells in a test tube separate from blood serum over time, becoming sediment at the bottom of the test tube. The sed rate increases as inflammation increases. The sed rate can also become…
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Sedative
A drug that calms a patient, easing agitation and permitting sleep. Sedatives generally work by modulating signals within the central nervous system. If sedatives are misused or accidentally combined, as in the case of combining prescription sedatives with alcohol, they can dangerously depress important signals that are needed to maintain heart and lung function. Most sedatives…
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Section, Cesarean
Also referred to as a C-section. A procedure in which a baby, rather than being born vaginally, is surgically extracted (removed) from the uterus. As the name “Cesarean” suggests, this is not exactly a new procedure. It was done in ancient civilizations upon the death of a pregnant woman who was near full term in order…
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Section
1) In anatomy, a slice of tissue. A biopsy obtained by surgery is usually sectioned (sliced), and these sections are inspected under a microscope. 2) In obstetrics, short for Cesarean section. 3) In surgery, the division of tissue during an operation.
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Secondary amenorrhea
The cessation of menstruation for abnormal reasons. Causes include anorexia nervosa, disease of the female reproductive tract, and overexercise. Secondary amenorrhea can also be caused by certain medications, notably the birth control medication medroxyprogesterone (brand name: Depo-Provera); in this case, amenorrhea is an expected effect.
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Seborrheic dermatitis
A medical name for what is popularly called seborrhea.
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Seborrhea
A chronic inflammatory disease of the skin characterized by the accumulation of scales of greasy skin. There may be yellow crusted plaques that are itchy. Seborrhea often affects the scalp. Other sites include the face, ears, eyebrows and eyelids, umbilicus, and genitalia, Seborrhea of the scalp is commonly known as dandruff. Treatment is with frequent use of dandruff shampoos…