Infection Flashcards

(59 cards)

1
Q

<p>What virus causes shingles and chicken pox? </p>

A

<p>Varicella Zoster virus </p>

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2
Q

<p>When do people usually get chicken pox? </p>

A

<p>Primary infection typically in childhood</p>

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3
Q

<p>When do people usually get shingles? </p>

A

<p>Typically an older age, is a reactivation of virus </p>

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4
Q

<p>How does chickenpox present? </p>

A

<p>Generalised rash (inflammation)
Fever
Itch</p>

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5
Q

<p>What are the steps of recovery in terms of the rash in chickenpox? </p>

A

<p>Macules --> Papules --> Vesciles --> Scabs --> Recovery</p>

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6
Q

<p>What are the complications of chicken pox? </p>

A
<p>Secondary bacterial infection 
Pneumonitis 
Haemorrhagic
Scarring, absent or minor 
Encephalitis </p>
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7
Q

<p>What is neonatal VZV? </p>

A

<p>Secondary chickenpox in mother in late pregnancy, high mortality rate</p>

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8
Q

<p>How is neonatal VZV prevented? </p>

A

<p>Varicella Zoster Immune Globulin in susceptible women in contact </p>

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9
Q

<p>What is the distribution of shingles on the skin? </p>

A

<p>Dermatomal </p>

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10
Q

<p>Who gets shingles ? </p>

A

<p>Eldely and immunocomprimised </p>

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11
Q

<p>What nerve is commonly affected in shingles? </p>

A

<p>Trigeminal </p>

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12
Q

<p>What pain is associated with shingles? </p>

A

<p>Neuralgia </p>

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13
Q

<p>What is Opthalmic Zoster? </p>

A

<p>Shingles associated with the opthalmic division of the trigeminal nerve. Urgent opthalmic referral indicated </p>

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14
Q

<p>In this image of shingles, which nerve is being affected?</p>

A

<p>Opthalmic division of trigeminal nerve</p>

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15
Q

<p>In this image of shingles, which nerve is being affected?</p>

A

<p>Maxillary division of the trigeminal nerve</p>

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16
Q

<p>In this image of shingles, which nerve is being affected?</p>

A

<p>Mandibular division of the trigeminal nerve</p>

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17
Q

When does opthalmic zoster occur in children?

A

Chickenpox in utero

Immunosuppressed

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18
Q

What is Ramsay Hunt Syndrome?

A

Herpes Zoster infection of the geniculate ganglion of the facial nerve. Results in muscle paralysis on the same side of the face with the infection

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19
Q

Where do you get pain in Ramsay Hunt Syndrome?

A

Auditory canal and throat

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20
Q

In Ramsay Hunt syndrome, what symptoms do you get if there is irritation of the 8th cranial nerve?

A

Deafness
Vertigo
Tinnitus

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21
Q

Who routinely gets vaccinated against shingles in the UK?

A

> 70s

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22
Q

What is a somewhat common complication of shingles?

A

Herpatic Neuralgia

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23
Q

How is herpes simplex virus and varicella zoster virus treated?

A

Aciclovir (does not eliminate latent virus)

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24
Q

How to get lab confirmation of VZV or HSV infection?

A

Viral swab of viral skin / mucous membrane
OR
Antibody tests where swabs not obtainable

25
What is Erythema Multiforme?
a hypersensitivity reaction usually triggered by infections
26
What rash is typical is Erythema Multiforme?
Target lesion
27
What infections cause Erythema Multiforme
HSV (most commonly) | Myciplasma pneumoniae bacterium
28
What disease presents with Fleshy, firm, umbilicated, pearlescent nodules?
Mollscum Contagiosum
29
Who is affected by Mollscum Contagiosum?
Children (but can be sexually transmitted)
30
How to treat Mollscum Contagiousm?
Application of liquid nitrogen --> takes months to disappear
31
What virus causes warts?
Human Papilloma Virus
32
What are warts on feet called?
Veruccas
33
What subtype of HPV causes warts?
type 1 to 4
34
What subtype of HPV causes genital warts?
type 6 and 11
35
What subtype of HPV causes cervical cancer?
types 16 and 18
36
What is hyperangia?
Blistering rash of back of mouth
37
What infection causes Hyperangia?
Coxsackie virus | Echovirus
38
How to diagnose Hyperangia?
Swab of lesion | PCR of stool for enterovirus
39
What infection causes hand, foot and mouth disease?
Enteroviruses (esp Coxsackie)
40
What infection causes slapped cheek syndrome?
Paravirus B19
41
What are some symptoms of slapped cheek syndrome?
Red rash of face | Acute arthritis, esp in wrists as rash fades
42
What are some complications of Paravirus B19?
Spontaneous abortion Aplastic crisis Chronic anaemia
43
How do you diagnose Paravirus B19?
Paravirus B19 IgM test
44
What disease is deemed as a virus of sheep?
Orf disease
45
Symptoms of Orf disease?
Firm, fleshy nodule on hands | typically affects farmers
46
What is the sign of primary phase Syphilis?
Chancre, a painless ulcer on the site of entry of infection
47
What are the signs of secondary phase of syphilis?
Rash all over body (mainly sole of feet and palms of hands) | Mucous membane "snail track" ulcers
48
What are the signs of tertiary phase of syphilis?
gummatous syphilis late neurosyphilis and cardiovascular syphilis
49
What infection cause Syphilis?
Bacterium Treponema Pallidum
50
How do you diagnose syphilis?
Blood test | Swab on chancre then PCR
51
Treatment of syphilis?
Penecillin injections
52
How vector causes Lyme Disease?
Tic
53
What infection causes Lyme disease?
Borrelia Burgdorferi
54
What is the early presentation of Lyme disease?
Erythema Migrans
55
What is the late presentation of Lyme disease?
Heart block Nerve palsy Arthritis
56
How to treat Lyme disease?
Doxycycline or Amoxicillin
57
How to confirm diagnosis of Lyme disease?
Blood test
58
What months of the year are tics most active?
May to September
59
How long does a tic need to be attached to cause infection?
24 hours