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Small Cell Lung Cancer
Small cell lung cancer is a fast-growing type of lung cancer that begins in certain cells of the lung. It commonly spreads…
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Social Anxiety Disorder
Social anxiety disorder is a mental health condition involving a persistent, intense fear of being judged, rejected, embarrassed, or humiliated in social…
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Spastic Bladder
Spastic bladder is a term for involuntary contractions of the bladder muscle, which can cause a sudden urge to urinate, frequent urination,…
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Spastic Cerebral Palsy
Spastic cerebral palsy is a type of cerebral palsy that causes stiff or tight muscles and difficulty controlling movement and posture. It…
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Spasticity
Spasticity is abnormal muscle tightness or stiffness caused by disrupted nerve signals that control voluntary movement. It can affect people with conditions…
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Spinal Cord Injury
A spinal cord injury is damage to the spinal cord, the bundle of nerves that carries messages between the brain and the…
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Spinal Stenosis
Spinal stenosis is narrowing of the spaces within the spine, which can put pressure on the spinal cord or the nerves that…
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Spondylolisthesis
Spondylolisthesis is a condition in which one vertebra shifts or slips in relation to the vertebra below it. It most often affects…
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Staphylococcal Food Poisoning
Staphylococcal food poisoning occurs after eating food containing toxins made by Staphylococcus aureus. This food poisoning staphylococcus illness often causes sudden nausea,…
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Staphylococcal Scalded Skin Syndrome
Staphylococcal scalded skin syndrome (SSSS), also called scalded skin syndrome or burnt skin syndrome, is a serious skin condition caused by toxins…
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Staphylococcal Toxic Shock Syndrome
Staphylococcal toxic shock syndrome is a rare, serious illness caused by toxins released by certain strains of Staphylococcus aureus bacteria. These toxins…
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Stomach Cancer
Stomach cancer, also called gastric cancer, begins when abnormal cells in the stomach grow uncontrollably and form a tumor. The most common…
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Strabismus
Strabismus is a condition in which the eyes do not line up or move together consistently. One eye may turn inward, outward,…
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Streptococcal Infection Of The Skin
Streptococcal infection of the skin occurs when streptococcal bacteria enter broken, irritated or damaged skin. These bacteria can cause impetigo, cellulitis or…
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Streptococcal Pharyngitis
Streptococcal pharyngitis is a throat infection caused by group A Streptococcus bacteria. It is especially common in children and adolescents, although people…
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Streptococcus Meningitis
Streptococcus meningitis is an infection and inflammation of the meninges, the protective membranes around the brain and spinal cord, caused by Streptococcus…
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Stroke
A stroke happens when blood flow to part of the brain is blocked or when a blood vessel in the brain bursts…
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Sudden Arrhythmic Death Syndrome
Sudden arrhythmic death syndrome is an unexpected cardiac arrest or death caused by a dangerous problem with the heart’s electrical rhythm. It…
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Superficial Bacterial Folliculitis
Superficial bacterial folliculitis is a bacterial infection or inflammation that affects mainly the upper part of a hair follicle. It can cause…
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Superficial Thrombophlebitis
Superficial thrombophlebitis is inflammation and clotting in a vein close to the surface of the skin. It usually affects veins in the…
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Syphilis
Syphilis is a sexually transmitted infection caused by the bacterium Treponema pallidum. This transmitted disease can affect people of any sex or…
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Systemic Lupus Erythematosus
Systemic lupus erythematosus, often called lupus, is a chronic autoimmune disease in which the immune system mistakenly attacks healthy tissues. It can…
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Tar Syndrome
TAR syndrome stands for thrombocytopenia-absent radius syndrome, a rare genetic condition. People with TAR typically have absent or severely underdeveloped radius bones…
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Tennis Elbow
Tennis elbow is irritation or degeneration of the tendons that attach the forearm muscles to the bony outer part of the elbow.…
