Synonyms: Morbus coeruleus, Blue disease Definition of Cyanosis Cyanosis is the bluish discoloration of the skin, mucous membrane and nail bed usually owing to atleast 5 gm/dl of reduced hemoglobin/deoxyhemoglobin or abnormal hemoglobin derivatives (eg. methemoglobin, sulfhemoglobin, etc.) circulating within the superficial dermal capillaries and subpapillary venous plexus (not, as commonly taught, the…
Tag: Pediatrics
Section Editor: Dr. Sujit Kumar Shrestha, MD Pediatrics, Fellowship Neonatology
Clinical Skills and Approaches 
Icterus
Synonyms: Jaundice Definition of Icterus Icterus is the yellowish discoloration of skin and mucous membrane and body fluids (CSF, joint fluid, cysts) evident as a result of hyperbilirubinemia with subsequent deposition of bile pigments in tissue which is rich in elastin. The Greeks claimed the sight of an oriole would…
Clinical Skills and Approaches 
Pallor
Synonyms: Paleness Definition of Pallor Pallor is the paleness of skin and mucous membranes, due to the reduced amount of oxyhemoglobin or decreased peripheral perfusion. Sites to look for pallor Lower palpebral conjunctiva Tip and dorsum of the tongue Soft palate Nail beds Palmar or plantar creases General body skin…