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…
Single Lesion Paucibacillary Leprosy
Single lesion paucibacillary (SLPB) leprosy is a distinct clinical presentation of Hansen’s disease characterized by a solitary skin lesion with no detectable bacilli on slit-skin…
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
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…
Sickle Cell Disease with Crisis
Sickle cell disease (SCD) with crisis represents the acute, life-threatening episodes that occur in individuals with SCD, often requiring urgent medical intervention. These crises are…
Sickle Cell Disease
Sickle cell disease (SCD) is a group of inherited red blood cell disorders caused by a mutation in the HBB gene leading to the production…
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
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…
Shy-Drager Syndrome
Shy-Drager Syndrome, now more commonly referred to as Multiple System Atrophy (MSA), is a rare, progressive neurodegenerative disorder characterized by a combination of autonomic dysfunction,…
Short Stature in Children Born Small for Gestational Age
Children born small for gestational age (SGA) are those whose birth weight is below the 10th percentile for their gestational age. This means that their…