Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Vidit Bhargava, M.B.B.S [2]
Measles is a condition, that is best diagnosed clinically based on a constellation of signs and symptoms. Fever, rash and conjunctivitis are 3 major physical findings that must be looked out for, while making the diagnosis of measles.[1][2]
- A high fever is always present, it could be as high as 105°F.
- Three to five days after the start of symptoms, a red or reddish-brown itchy rash appears.
- The rash usually begins on a person’s face at the hairline and spreads downward to the neck, trunk, arms, legs, and feet.
- It also regresses in the same manner as it appeared in about 5-7 days.
- The rash is blanching, maculopapular in nature to begin with but may coalesce later to become plaques and patches.
- When the rash appears, a person’s fever may spike to more than 104°F.
- Shown below are images depicting the characteristic rash of measles.
Images obtained from the Public Health Image Library[3]
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Image showing measles rash on day 3.
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Image showing characteristic day 4 appearance of measles
rash.
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Typical appearance of rash on day 3, measles.
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Face of child with measles.
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Characteristic red blotchy pattern on his buttocks during 3rd day of the rash.
- Conjuntivitis, also known as pink eye, is one of the 3 'C' 's in the classical 3 'C' presentation of measles (other 2 being cough and coryza).
- Shown below is an image illustrating pink eye in a child with measles:
Images obtained from the Public Health Image Library[3]
- Koplik's spots are tiny white spots with erythematous base and bluish-white centers found inside the mouth at the base of second molars.
- These appear usually 2-3 days after initial prodrome and may or may not persist until the rash disappears.
- Although they are pathognomic, Koplik's spots are not present in all the cases.
- Its absence does not exclude the diagnosis of measles.
Images obtained from the Public Health Image Library[3]
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