8. Measles & Rashes · Extremely contagious 90% risk of contracting measles if unimmunized and...
Transcript of 8. Measles & Rashes · Extremely contagious 90% risk of contracting measles if unimmunized and...
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Antonio Brandt, MD
Measlesand Other Fine Rashes
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● Measles is in the news
● Extremely contagious
● If we see a suspected case, we may need to consider options other than transport
● Our communities look to us as experts, and they will seek our advice
Why talk about measles?
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● Outbreaks are increasingly common in US
● Outbreaks are no longer just in isolated, self-contained groups (i.e. religious communes)
● 72 confirmed cases in Clark County, WA
● Also Portland and Seattle
Outbreak
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● Measles
● Other interesting or life threatening rashes
● Rash Jeopardy
And more than just measles
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● Also known as:● Rubeola (not rubella,
that’s a different virus)
● Red measles
● English measles
● Morbilli
Measles
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● In Clark County (as of this morning’s report)
● 68 in children (< 18 years)
● 70 cases in unimmunized or unverified immunity
● 2 cases had only one MMR vaccine
● CDC recommends 2 MMR vaccinations
Measles Outbreak
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● Extremely contagious
● 90% risk of contracting measles if unimmunized and share living space
● Airborne droplets and contact with secretions
● Patients are contagious throughout course of illness, even before the rash is visible
Measles Transmission
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● Cough
● Coryza (URI symptoms)
● Conjunctivitis
● Fevers up to 5 days
● Koplik spots
Measles Symptoms
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● Onset 7-21 days after exposure
● URI with conjunctivitis
● Koplik spots on day 2 or 3
● Then develop the rash on days 3-5
● Fever peaks after rash appears
Clinical Presentation
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● Rash starts on face
● Progresses caudally
● Entire illness usually lasts 7-10 days, unless
complications extend the course of illness.
Rash
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● Based on data prior to widespread vaccination (1963)
● The vast majority recovered without known sequelae
● 1 in 10 were hospitalized
● 1 in 20 developed pneumonia
● 1 in 500 developed encephalitis
● 1 in 1000 died
Clinical Course
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● Highest risk in patients < 5 or > 20 years old
● Overall, 30% of cases have complications
● However, most of these complications are diarrhea,
otitis media and pneumonia
Complications
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● Pregnancy – low birth weight, prematurity
● Long-term complications● SSPE
● Disability from encephalitis, pneumonia,
hospitalization
● Hearing loss
● Seizures
Complications
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● None
● Well, supportive care
● No aspirin for kids
● GamaSTAN immune globulin recently approved for post-exposure prophylaxis
● Can give vaccination for post-exposure prophylaxis
Treatments
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● URI » Koplik spots » rash
● High rate of complications compared to other viral exanthems
● Very contagious
● Vaccination works, adverse events very rare
Measles Summary
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● Meningococcemia
● TEN
● Stevens-Johnson
● Toxic Shock syndrome
● Urticaria / Angioedema / Anaphylaxis
Many Life Threatening Rashes
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● Chicken pox
● Shingles
● German measles (rubella)
● Poison ivy / oak / sumac
● Staphylococcal Scalded Skin syndrome
Other Interesting Rashes
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Stretch Break
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● 44 year old with 3 days of an itchy, painful rash on her left torso
● Normal vitals
First Case
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● Reactivation of varicella zoster virus (chicken pox)
● Dermatomal (can spill over a little)
● Contagious, virus is in the blisters
● Usually benign, but painful
Shingles
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● Postherpetic neuralga, herpetic keratitis
● Disseminated shingles can be lethal
● Antiviral treatments and neuropathic pain meds
● Vaccine available
Shingles
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● 20 year old college student with 12 hours of fevers andURI symptoms
● Also has this rash on her legs
● HR 130, BP 90/palp, 102 F
Next Case
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● Neisseria meningitidis
● Sepsis, meningitis
● High mortality, transmission by droplets & secretions
● Vaccine preventable
● Can look like other causes of petechiae, both benign and serious
Meningococcemia
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● 18 month old with an small abscess
● Soon after onset of abscess, developed this rash
● Behaving normally, normal vitals, rash doesn’t seem to bother him
Next Case
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● Widespread blistering, sloughing of skin
● Caused by exotoxins from S. aureus
● Supportive care + antibiotics
● Great outcomes in kids, a bit worse in adults
Staphylococcal Scalded Skin Syndrome
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● 24 year old female with 36 hours of fevers, rash on hands & feet
● HR 130 bpm, BP 70/palp, 101 F
● Looks toxic
Next Case
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● Toxins from S. pyogenes or S. aureus
● Fever, rash, hypotension; critically ill
● Desquamation of palms and soles
● IV antibiotics, IV fluids, IVIG, debridement
● High mortality, strep >> staph
Toxic Shock Syndrome
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● 30 year old with 24 hours of very itchy rash
● Onset soon after hiking
● Normal vitals
Next Case
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● Western poison ivy and Pacific poison oak in WA
● Urushiol usually causes local reaction, but anaphylaxis possible
● Wash/rinse, steroids, antihistamines
Poison Ivy
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● 5 year old with 4 days of URI symptoms, fevers, and now with this rash
● Has lymphadenopathy on exam
● Does not appear toxic
● Vitals normal except temp 101 F
Next Case
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● German measles, 3 day measles
● Similar to rubeola, but milder and shorter
● Lymphadenopathy, orchitis, Forchheimer’s spots
● Good outcomes except for congenital rubella
● No treatment, but vaccine works
Rubella
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● 44 year old male in walk-in clinic with “allergic reaction”
● Skin sloughing, oral lesions with swelling
● 90/palp, HR 110, other vitals normal
Next Case
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● SJS and TEN different spectrum of same disease
● Autoimmune reaction to medication or infection
● Treatment is controversial
● Remove offending agent, treat in burn center
Stevens-Johnson / TEN
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● 39 year old male with 4 days of fevers, myalgias,
malaise, headache and vomiting
● Then develops this rash
Next Case
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● Spread by tick bites, usually summer time
● Uncommon, < 5,000 / year in US
● Fever, headache, centripetal rash
● 1 in 8 die without treatment, 1 in 200 with doxycycline
Rocky Mountain Spotted Fever
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● 2 year old with URI symptoms, cough, fevers, and
now this rash
● Happy, playful, dosen’t look sick
● Normal vitals
Last Case
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● URI symptoms, fevers, then rash
● Vesicles in different stages at the same time
● Vaccine available; use antivirals if high risk
Chicken Pox
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