A sudden redness of the skin is known as :

Appeared in: RRB Staff Nurse Ahmedabad-2015

Explanation

A flush is the correct medical term for a sudden, transient reddening of the skin.
This phenomenon is caused by vasodilation, an increase in the diameter of blood vessels, which brings more blood to the skin's surface.
Common physiological and emotional triggers include fever, exercise, embarrassment (blushing), and consumption of alcohol or certain medications.

Option B: Cyanosis is characterized by a bluish or purplish discoloration of the skin, not redness. It indicates a lack of oxygen in the blood.
Option C: Jaundice presents as a yellow or orange discoloration of the skin and the whites of the eyes (sclera). It is caused by high levels of bilirubin.
Option D: Pallor is an unusual paleness or loss of color from the skin. It results from reduced blood flow or a decreased number of red blood cells (anemia).

Visual 1: Infographic - A comparative chart showing four skin tones: a reddish flush, bluish cyanosis, yellowish jaundice, and pale pallor, with brief descriptions of the underlying cause for each.
Visual 2: Diagram - A cross-section of the skin illustrating the difference between dilated blood vessels causing a flush and constricted vessels causing pallor.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Assessment of skin color variations as background academic context rather than a clinical decision trigger.
Assessing for changes in skin color is a fundamental nursing skill that provides vital clues about a patient's circulatory, respiratory, and metabolic status.
A sudden flush can be an early sign of fever, an adverse drug reaction, or an allergic response, requiring prompt investigation by the nurse.
What if? - If a patient develops a flush along with hives, wheezing, and hypotension, the nurse must immediately suspect anaphylaxis, a life-threatening emergency, rather than a simple physiological flush.

How to Approach the Question

This is a factual recall question that tests your knowledge of basic medical terminology related to physical assessment.
First, analyze the keywords in the question stem: 'sudden redness of the skin'.
Next, review the options and recall the definition for each term.
Flush directly means a sudden reddening.
Cyanosis refers to a blue color, Jaundice to a yellow color, and Pallor to paleness.
Match the definition in the question to the correct term. 'Redness' clearly aligns with 'Flush'.

Concept Tested & Keywords

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