sitosterolemia
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Sitosterolemia

Sitosterolemia is a rare genetic disorder characterized by the abnormal accumulation of plant sterols (phytosterols) in the body, particularly sitosterol. This condition disrupts cholesterol metabolism,…
sinus tachycardia
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Sinus Tachycardia

Sinus tachycardia is a condition where the sinoatrial (SA) node increases its firing rate, resulting in a heart rate exceeding 100 beats per minute while…
sinus bradycardia
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Sinus Bradycardia

Sinus bradycardia refers to a heart rhythm that originates from the sinoatrial (SA) node but at a rate slower than the normal resting threshold. Defined…
simple-partial epilepsy
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Simple-Partial Epilepsy

Simple-partial epilepsy, also known as focal aware seizures, is a form of epilepsy where seizures originate in a specific area of the brain and do…
sideroblastic anemia
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Sideroblastic Anemia

Sideroblastic anemia is a heterogeneous group of blood disorders characterized by the bone marrow's inability to properly incorporate iron into hemoglobin despite adequate or increased…
sialorrhea
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Sialorrhea

Sialorrhea, commonly known as excessive drooling, refers to the unintentional loss of saliva from the mouth. It results either from hypersalivation or from impaired oral…
siadh syndrome
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SIADH Syndrome

Syndrome of Inappropriate Antidiuretic Hormone Secretion (SIADH) is a disorder characterized by excessive release of antidiuretic hormone (ADH), also known as vasopressin. This hormone regulates…