derm

Question 1

how can chickenpox be spread

Answer 1

via the respiratory route
caught from someone with shingles
4 days before rash appear until 5 days after the rash first appeared
10-21 day incubation period

Question 2

clinical features of chickenpox

Answer 2

fever initially
itchy, rash starting on head/trunk before spreading
starts macular then papular then vesicular
systemic upset usually mild

Question 3

management of chickenpox

Answer 3

keep cool and trim nails
calamine lotion
stay off school: most infection before rash appears but still infections until all lesions are dry and have crusted over
varicella zoster immunoglobulin for immunocompromised patients and newborns with peripartum exposure

Question 4

most common complication of chickenpox

Answer 4

bacterial infection of the lesions
- NSAIDs may increase risk
- small number have invasive group A strep soft tissue infection-> nec fasc

Question 5

what is roseola infantum

Answer 5

common disease of infancy caused by human herpes virus 6
typically affects children 6 months -2 years

Question 6

features of roseola infantum

Answer 6

high fever, lasting a few days followed by
maculopapular rash
nagayama spots: papular enanthem on the uvula and soft palate
febrile convulsions
diarrhoea and cough

Question 7

other consequences of HHV6 infection

Answer 7

aseptic meningitis
hepatitis