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Q102 (CDS-I/2004) Science & Technology › Biotechnology & Health › Human infectious diseases Answer Verified

Which of the following statements is not correct?

Result
Your answer: —  Â·  Correct: C
Explanation

The timing of exanthem (rash) onset is a classic clinical marker for pediatric infectious diseases. In measles (rubeola), the rash typically appears 3 to 5 days after the initial prodromal symptoms like fever and cough [t1][t4]. In chickenpox (varicella), the rash is often the first sign or appears within 24 hours (first day) of fever onset [t8]. Scarlet fever is characterized by a 'sandpaper' rash that typically develops on the second day of illness. However, German measles (rubella) is famously known as '3-day measles' because the rash itself lasts for three days, but the rash actually appears on the first day of illness, not the third [t9]. Therefore, the statement claiming the rash in German measles appears on the third day is incorrect, as it typically manifests within 24 hours of the prodrome.

Sources

  1. [1] https://dphhs.mt.gov/assets/BHDD/DDP/MedicalDirector/MeaslesandMorePowerPoint050224.pdf
  2. [2] https://www.cdc.gov/measles/signs-symptoms/index.html
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