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63 Cards in this Set
- Front
- Back
What is this?
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A macule
(This one is cafe-au-lait) |
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What are the properties of a macule?
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Flat
Color change |
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What are causes of macules?
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Hyperpigmentation
Hypopigmentation Vascular abnormalities Dilated capillaries |
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What is this?
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Papule
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What is the difference between a papule and a plaque?
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Papule: < 1 cm
Plaque: > 1 cm |
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What is this
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Plaque
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What is this?
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Nodule
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What are the properties of nodules?
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BIg, spherically enlargedpapule.
Use different adjecties: firm, painless/painful, etc. |
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What is this?
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Bulla
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What is the difference between a vesicle and a bulla?
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Vesicle: < .5 cm
Bulla: > .5 cm |
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What kinds of fluids can be inside a vesicle/bulla?
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Serum
Lymph Blood |
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What is the definition of a pustule?
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Circumstcried, elevated lesion containing a purulent fluid
Neutrophils always, bacteria some of the time. |
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What are the small bumps on the man's face?
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Pustule
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What is the definition of an erosion?
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Loss of epidermus resulting in a circumscribed, moist, depressed lesion
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What is this?
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Erosion
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What is this?
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Crust
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What composes a crust?
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Dried serum, blood, or purulent exudate
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What kind of a lesion is this?
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Annular lesion
Active periphery, the middle is less active. |
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What kind of a lesion is this?
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Targetoid
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What kind of a lesion is this?
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Arciform
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What kind of a lesion is this?
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Serpiginojs
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If vesicles are grouped, what do you call it?
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Herpetifom
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If lesions follow a dermatome, what do you call it?
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Dermasomal
OR ZOSTERIFORM |
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What kind of a lesion is this?
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reticular
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What types of lesions are seen in impetigo?
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Vesicula/Bulls
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What are the causes of impetigo?
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Gram + bacteria:
S. aureus, S. pyogenes |
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How is Impetigo spread?
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Direct person-person contact
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What's the most common kind of impetigo?
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Non-bullous
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What bacteria usually causes Non-bullous impetigo?
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S. aureus
Some are caused by S. pyogenes |
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What are the properties of lesions from non-bullous impetigo?
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Red macule-->vesicle-->crust
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Generally, where does non-bullous impetigo occur?
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Nose, mouth, extremities
Sites of trauma |
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What bacteria causes Bullous impetigo?
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S. Aureus
A toxin causes the problems. |
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What population gets bullous impetigo?
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Neonates
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What are the treatments?
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Clean skin/remove crust
Ointment |
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Widespread papula on a 18 year old who has a hot tub: what do you think?
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Pseudomonas folliculitis
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What is the time course for pseudomonas folliculitis?
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Starts up 8 - 48 hours after exposure
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What's the treatment of pseudomonal folliculitis?
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It's normally self-limited
IF IMMUNE COMPROMISED: Oral fluoroquinolone |
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What is the cause of lyme disease?
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Borrelia burgdorferia
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What are the initial findings of Lyme disease?
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Erythema migrans
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What is the treatment of lyme disease?
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Doxy
Amoxicillin |
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Grouped vesicles are seen in what disease?
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Herpes simplex
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What type of herpes usually causes orolabial herpes? Genital?
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Orolabial: HSV-1
Genital: HSV-2 |
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What is the mechanism of transmission of herpes?
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Direct contact
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what are the symptoms of an active herpes infection?
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Pain
Tenderness burning Fever ymphadenopathy |
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How does herpes establish latency?
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Skin--> Dorsal root ganglion along the nerve
It can then go back down to the skin to reactivatex |
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What virus causes chicken pox?
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VZV
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What's the transmission of VZV?
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Airborne droplets
DIrect contact with the vesicles |
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What's the typical pattern on the body for VZV?
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Scalp-->trunk-->extremities
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In what stage is VZV contagious?
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When things aren't crusted over.
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What disease should you think of when they say, "Dew drop on a rose petal?"
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VZV
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What virus causes shingles? How does it happen?
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VZV
You get a reactivation of the VZV |
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What condition causes a reticular pattern?
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Erythema infectiosum
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What virus causes erythema infectiosum?
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Parvovirus B19
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How is erythema infectiosum transmitted?
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Respiratory droplets
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What is the pattern of the rash travelling in erythema infectiosum?
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Initial rash on the cheeks
Later, a reticulate rash on the extremities |
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What are serious complications to erythema infectiosum?
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ANEMIA
Can happen seriously in newborns |
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What causes swimmers itch?
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Schistosomes
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What animals are involved in swimmers itch?
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Duck are the host, crap out the eggs, gets picked up in the snails, then humans can get it.
Causes lots of papules. |
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What causes a serpingenous lesion?
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SCABIES!
They show a burrow sign |
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What are the symptoms of scabies?
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ITCHING!
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How do you diagnose scabies?
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Look for the little bugger in the skin: scrape it and look in a scope.
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What is this?
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Erosion/ulceration
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What kind of a spider can cause an ulcerating lesion?
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BROWN RECLUSE!
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