Cutaneous Exanthems Flashcards
Rubeola is AKA?
Measles
Rubella is AKA?
German measles
Roseola is AKA?
6th disease (fever before rash) Exanthem subitum
5th Dz is AKA?
Erythema infectiosum
Varicella is AKA?
Chicken pox
6 different cutaneous exanthems?
Rubeola Rubella Roseola 5th Dz Varicella Hand/foot/mouth disease
Rubeola etiology/epidemiology?
Highly contagious
RNA paramyxovirus
URI and regional lymph nodes
Systemic spread
Rubeola incubation time?
8-14d
Rubeola is infectious when?
5d before RASH and 4 days after
Rubeola is transmitted via?
Respiratory secretions,
Blood,
Urine
Rare in young infants <1yr due to?
Maternal antibodies
Rubeola presents as?
Rash-exanthem
High fever 104-105
Classic S/S ( Cough, Coryza, Conjunctivitis)
Koplik spots (lower molars - gray-white spots)
Cervical/Mesenteric LAD
Splenomegaly
Rubeola Rash-exanthem begins when/where/how?
2-5d after fever
On head > most of body over 24hrs
(rash fades same way - Rash extent = severity)
Rubeola Rash appearance?
Macular rash - petechial or hemorrhagic
Infants w/ Rubeola w/ have what presentation also?
AOM, Pneumonia, Diarrhea
WBC level of rubeola pt is?
Leukopenia
Dx of rubeola?
Clinical
PCR or IgM ABs
PEDs MC complication of measles is?
AOM
TXT of rubeola?
Supportive - fluids/APAP
Vit A for 2days
TXT complications
Rubeola Prevention?
Vaccine (MMR)
Rubeola prophylaxis available? If so when?
Measles vaccine w/in 72hr of exposure
Immunoglobin w/in 6d of exposure
Rubella etiology/epidemiology?
Togavirus - Single strand RNA
Unvaccinated populations in spring
Maternal antibodies protect infant for how long against Rubella?
6mo
Rubella incubation period?
14-21d
Rubella transmitted via?
Direct contact or droplets from nasopharyngeal secretions
Rubella pahtophys?
Invades respiratory epithelium >
Virus spreads through blood
Rubella most infectious when?
2d before RASH 5-7 after
- virus will be present 7d before RASH 14d after
Rubella presents as?
Rash Low fever, HA LAD - post auricular/cervical/occipital Mild sore throat, Conjunctivitis Anorexia, malaise, Polyarthritis (hands) Forschheimer spots
Rubella Rash-exanthem begins when/where/how?
Begins on face and spreads to the body that lasts 3 days.
Rubella rash appearance?
Red, maculopapular, discrete rash
Forschheimer spots are?
Rose-colored spots on palate indicting Rubella
Complications of Rubella typically occur when/where/what?
In-utero
- Blueberry muffin baby
- Deaf, Cataracts, CHD
- Sheds virus in NP secretion up to >12mo after birth
PVT of Rubella include?
Vaccine
Erythema infectiosum (5th) etiology/epidemiology?
Parvovirus B19 (single strand DNA)
High affinity for RBC stem cells
Spring time epidemics