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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. Seborrhea Seborrhea
    Seborrhea: A chronic inflammatory disease of the skin characterized by the accumulation of scales of greasy skin. There may be yellow crusted patches that are itchy. Seborrhea often affects the scalp. Other sites include the face, ears, eyebrows and eyelids, umbilicus, and genitalia, Seborrhea of th...
  2. Seborrheic dermatitis Seborrheic dermatitis
    Seborrheic dermatitis: A medical name for what is popularly called seborrhea....
  3. Seborrheic eczema Seborrheic eczema
    Seborrheic eczema: Yellowish, oily, scaly patches of skin on the scalp, face, and occasionally other parts of the body....
  4. Seborrheic keratosis Seborrheic keratosis
    Seborrheic keratosis: See: Keratosis, seborrheic....
  5. Sebum Sebum
    Sebum: An oily secretion of the sebaceous gland which helps to preserve the flexibility of the hair....
  6. Seckel syndrome Seckel syndrome
    Seckel syndrome: A birth defect syndrome with severe short stature and, characteristically, low birth weight, very small head (microcephaly), receding forehead, large eyes, low ears, prominent beaklike protrusion of the nose, and smallish chin. Defects of bones in the arms and legs, dislocation...
  7. Second cranial nerve Second cranial nerve
    Second cranial nerve: The second cranial nerve is the optic nerve, the nerve that connects the eye to the brain and carries the impulses formed by the retina -- the nerve layer that lines the back of the eye, senses light and creates the impulses -- to the brain which interprets them as images....
  8. Second degree burn Second degree burn
    Second degree burn: See: Burn, second degree....
  9. Second stage of labor Second stage of labor
    Second stage of labor: The part of labor from the full dilatation of the cervix until the baby is completely out of the birth canal. The second stage of labor is also called the stage of expulsion....
  10. Second wave Second wave
    Second wave: A phenomenon of infections that can develop during a pandemic. The disease infects one group of people first. Infections appear to decrease. And then, infections increase in a different part of the population, resulting in a second wave of infections....
  11. Second-hand smoke Second-hand smoke
    Second-hand smoke: Environmental tobacco smoke that is inhaled involuntarily or passively by someone who is not smoking. Environmental tobacco smoke is generated from the sidestream (the burning end) of a cigarette, pipe or cigar or from the exhaled mainstream (the smoke puffed out by smokers) of ci...
  12. Secondary amenorrhea Secondary amenorrhea
    Secondary amenorrhea: The abnormal cessation of menstruation. Amenorrhea is conventionally divided into primary and secondary . With primary amenorrhea, menstruation never takes place. It fails to occur at puberty. With secondary amenorrhea, menstruation starts but then stops. The absence of m...
  13. Secondary amyloidosis Secondary amyloidosis
    Secondary amyloidosis: One of a group of diseases (called amyloidosis) in which protein deposits (amyloid) accumulate in one or more organ systems in the body, secondary amyloid is caused by a chronic infection or inflammatory disease such as rheumatoid arthritis, familial Mediterranean fever, osteo...
  14. Secondary atelectasis Secondary atelectasis
    Secondary atelectasis: Partial or total collapse of a lung or a segment of a lung that was once expanded, as may happen after chest surgery. Secondary atelectasis is in contrast to primary atelectasis in which there is failure of the lung to expand fully at birth....
  15. Secondary cataract Secondary cataract
    Secondary cataract: See: Cataract, secondary....