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Diseases & conditions A-Z List

Diseases & Conditions A-Z List - «S»:

  1. Scrotal swelling Scrotal swelling
    Scrotal swelling is abnormal enlargement of the scrotum, the sac surrounding the testicles. Considerations Scrotal swelling can occur in males at any age. The swelling can be on one or both sides, and there may be pain. The testicles and penis may or may not be involved. Testicular torsion is a se...
  2. Scrotum Scrotum
    The scrotum is a part of a male's body located behind the penis. The scrotum is the sac (pouch) that contains the testes, blood vessels, and part of the spermatic cord. ...
  3. Scurvy Scurvy
    Scurvy is a condition characterized by general weakness, anemia, gum disease (gingivitis), and skin hemorrhages resulting from a lack of ascorbic acid (vitamin C) in the diet. Scurvy is now most frequently seen in older, malnourished adults, and is rare in the United States. Alternative Names Vitam...
  4. Seasonal affective disorder Seasonal affective disorder
    Seasonal affective disorder (SAD) refers to episodes of depression that occur every year during fall or winter. Symptoms improve in spring and summer. Causes The disorder may begin in adolescence or early adulthood. Like other forms of depression, it occurs more often in women than in men. Most peo...
  5. Sebaceous adenoma Sebaceous adenoma
    A sebaceous adenoma is a noncancerous tumor of an oil-producing gland. Information A sebaceous adenoma looks like a small bump. There is usually one one, and it is usually found on the face, scalp, belly, back, or chest. A sebaceous adenoma may be a sign of more serious internal disease. Several sm...
  6. Sebaceous cyst Sebaceous cyst
    A sebaceous cyst is a closed sac under the skin filled with a cheese-like or oily material. See also: Carbuncle Cyst Furuncle Causes Sebaceous cysts most often arise from swollen hair follicles. Skin trauma can also induce a cyst to form. A sac of cells is created into which a protein cal...
  7. Seborrheic dermatitis Seborrheic dermatitis
    Seborrheic dermatitis is a common, inflammatory skin condition that causes flaky, white to yellowish scales to form on oily areas such as the scalp or inside the ear. It can occur with or without reddened skin. Cradle cap is the term used when seborrheic dermatitis affects the scalp of infants...
  8. Seborrheic keratosis Seborrheic keratosis
    Seborrheic keratosis is noncancerous (benign) wart-like growths on the surface of the skin. Causes Seborrheic keratosis is a benign form of skin tumor. The cause is unknown. The condition commonly appears after age 40. Symptoms Symptoms are skin growths that: Are located on the face, chest, should...
  9. Secondary amenorrhea Secondary amenorrhea
    Secondary amenorrhea occurs when a woman who has been having normal menstrual cycles stops getting her periods for 6 or more months. Amenorrhea is when a woman does not get her monthly menstrual cycle, or period. See also: Menstruation - Absent Primary amenorrhea Causes Women who are pregnant...
  10. Secondary aplastic anemia Secondary aplastic anemia
    Secondary aplastic anemia is a failure of the bone marrow to make enough blood cells. All blood cell types are affected. Causes Secondary aplastic anemia is caused by injury to blood stem cells. Normal blood stem cells divide and turn into all blood cell types, mainly white blood cells, red blood c...
  11. Secondary infections Secondary infections
    A secondary infection is an infection that occurs during or after treatment of another, already existing infection. It may result from the treatment itself or from alterations in the immune system. For example, a vaginal yeast infection that occurs after antibiotic treatment of a bacterial infection...
  12. Secondary parkinsonism Secondary parkinsonism
    Secondary parkinsonism is similar to Parkinson's disease, but it is caused by certain medicines, a different nervous system disorder, or another illness. Causes Parkinson's disease is one of the most common nervous system (neurologic) disorders of the elderly. "Parkinsonism" refers to any condition...
  13. Secondary systemic amyloidosis Secondary systemic amyloidosis
    Secondary systemic amyloidosis is a disorder in which abnormal proteins build up in tissues and organs. Clumps of the abnormal proteins are called amyloid deposits. Secondary means it occurs because of another disease or situation. For example, this condition usually occurs as a result of chronic in...
  14. Secretin stimulation test Secretin stimulation test
    The secretin stimulation test measures the ability of the pancreas to respond to a hormone called secretin. Secretin is produced by the small intestine when partially digested food has moved into the area from the stomach. How the Test is Performed A tube is inserted through the nose and into the s...
  15. Seizures Seizures
    A seizure is the physical findings or changes in behavior that occur after an episode of abnormal electrical activity in the brain. See also: Generalized tonic clonic seizure Partial (focal) seizure Petit mal (absence) seizure Epilepsy Fever (febrile) convulsions (seizures in children with...