erythema infectiosum

Question 1

What virus causes erythema infectiosum (fifth disease)?

Answer 1

Parvovirus B19

Question 2

What is the classic facial rash seen in erythema infectiosum?

Answer 2

Bright red “slapped cheek” appearance with sparing of the nasal ridge and perioral area

Question 3

Describe the body rash in erythema infectiosum.

Answer 3

Lacy, reticular, pink or red rash, often on the arms, legs, and trunk, which may be itchy and can recur with triggers like sunlight or exercise

Question 4

How is erythema infectiosum diagnosed?

Answer 4

Usually clinical diagnosis based on characteristic rash; blood tests only if complications or in special circumstances (e.g., pregnancy, immunodeficiency)

Question 5

What is the treatment for erythema infectiosum?

Answer 5

Supportive care only-rest, fluids, and symptom relief (e.g., paracetamol or NSAIDs for fever and pain); no specific antiviral treatment

Question 6

What are the prodromal (early) symptoms of erythema infectiosum?

Answer 6

Mild fever, headache, runny nose, sore throat, fatigue, and sometimes mild muscle or joint pain

Question 7

When is a person with erythema infectiosum contagious?

Answer 7

Most contagious in the days before the rash appears; once the rash is present, they are usually no longer contagious