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Drugs and diseases reference index

Drugs and diseases reference index
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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «S»:

  1. Slapped cheek Slapped cheek
    Slapped cheek: See: Fifth disease...
  2. SLE (systemic lupus erythematosus) SLE (systemic lupus erythematosus)
    SLE (systemic lupus erythematosus): A chronic inflammatory condition caused by an autoimmune disease. An autoimmune disease occurs when the body's tissues are attacked by its own immune system. Patients with lupus have unusual antibodies in their blood that are targeted against their own body tissu...
  3. Sleep Sleep
    Sleep: The body's rest cycle. Sleep is triggered by a complex group of hormones that are active in the main, and that respond to cues from the body itself and the environment. About 80 percent of sleep is dreamless, and is known as non-rapid eye movement (NREM) sleep. During NREM sleep, the...
  4. Sleep apnea Sleep apnea
    Sleep apnea: The temporary stoppage of breathing during sleep, often resulting in daytime sleepiness. Apnea is a Greek word that means "want of breath." The most common form of sleep apnea is obstructive sleep apnea. In obstructive sleep apnea, the muscles of the soft palate around the base of th...
  5. Sleep apnea, central Sleep apnea, central
    Sleep apnea, central: A breathing disorder characterized by brief interruptions of breathing during sleep. Central sleep apnea occurs when the brain fails to send the appropriate signals to the breathing muscles to initiate respirations. Central sleep apnea is less common than obstructive sleep...
  6. Sleep apnea, obstructive Sleep apnea, obstructive
    Sleep apnea, obstructive: Sleep apnea is a breathing disorder characterized by brief interruptions of breathing during sleep. It owes its name to a Greek word, apnea, meaning "want of breath." There are two types of sleep apnea: central and obstructive. Central sleep apnea occurs when the brain f...
  7. Sleep disorders Sleep disorders
    Sleep disorders: Any disorder that affects, disrupts, or involves sleep. The most common sleep disorder is probably snoring, although it is usually not medically significant. Insomnia, sleep apnea, restless leg syndrome, and sleepwalking are also sleep disorders. Most large medical centers hav...
  8. Sleep drug Sleep drug
    Sleep drug: Any drug used to help sleep. Most prescription sleep drugs are sedative hypnotic agents. They include Valium, Xanax, Restoril, Ambien, and Sonata....
  9. Sleep jerk Sleep jerk
    Sleep jerk: See: Hypnic jerk....
  10. Sleep paralysis Sleep paralysis
    Sleep paralysis: A frightening form of paralysis that occurs when a person suddenly finds himself or herself unable to move for a few minutes, most often upon falling asleep or waking up. Sleep paralysis is due to an irregularity in passing between the stages of sleep and wakefulness. The symptom...
  11. Sleep restriction therapy Sleep restriction therapy
    Sleep restriction therapy: A type of therapy in which the number of hours of sleep are restricted. Sleep restriction therapy is used in insomnia. Some people with insomnia spend too much time in bed unsuccessfully trying to sleep. They may benefit from a sleep restriction program that at first allo...
  12. Sleep start Sleep start
    Sleep start: See: Hypnic jerk....
  13. Sleep talking Sleep talking
    Sleep talking: Talking in one's sleep is considered a normal phenomenon that is of no medical or psychological consequence. Also called somniloquy....
  14. Sleep, non-rapid eye movement Sleep, non-rapid eye movement
    Sleep, non-rapid eye movement: NREM (non-rapid eye movement) sleep is dreamless sleep. During NREM, the brain waves on the electroencephalographic (EEG) recording are typically slow and of high voltage, the breathing and heart rate are slow and regular, the blood pressure is low, and the sleeper is...
  15. Sleep, NREM Sleep, NREM
    Sleep, NREM: NREM (non-rapid eye movement) sleep is dreamless sleep. During NREM, the brain waves on the electroencephalographic (EEG) recording are typically slow and of high voltage, the breathing and heart rate are slow and regular, the blood pressure is low, and the sleeper is relatively still....