Infectious Diseases

Question 1

red eye with purulent discharge, tense edema of eyelids with marked chemosis; incubation period 2-5 days

Answer 1

Neisseria gonorrhea

DOC: Ceftriaxone 50mkday for 1 dose

Question 2

mild to severe swelling of eyelids with copious purulent discharge; incubation period 5-14 days

Answer 2

Chalmydia trachomatis

DOC: Erythromycin 50 mkday every 6 hours for 14 days

Question 3

Days 5-18: edema and erythema of eyelids, purulent discharge, pannus formation, endophthalmitis

Answer 3

Pseudomonas aeruginosa

DOC: systemic antibiotics; Gentamicin eye ointment

Question 4

red itchy eyes, thin exudate, pain and photophobia, +/- cough and colds

Answer 4

Adenovirus

Question 5

red eyes, (+) pus

Answer 5

staphylococcus

Question 6

red eyes, (+) pus, inculsion bodies in scrapings

Answer 6

Chlamydia

Question 7

inturned eye lashes, corneal scarring and blindness

Answer 7

Chlamydia

Question 8

Stye

Answer 8

Staphylococcus

Question 9

Bilatera eyelid swelling, eosinophils, muscle pain, hx of infection

Answer 9

Trichinella

Question 10

unilateral inflammation at bite site around eye or mouth, hx of travel to Mexico or south america

Answer 10

t. cruzi

Question 11

All cestodes are treated with Praziquantel except

Answer 11

Echinococcus granulosus (Albendazole)

Question 12

All trematodes are treated with

Answer 12

praziquantel

Question 13

Tx for Ascaris, Necator, Capillaria

Answer 13

Albendazole

Question 14

Tx for Trichuris

Answer 14

Mebendazole

Question 15

Tx for Enterobius

Answer 15

Pyrantel pamoate

Question 16

Tx for Strongyloides

Answer 16

Ivermectin

Question 17

Tx for Wuchereria and Brugia

Answer 17

DEC

Question 18

Tx for Trichinella

Answer 18

Thiabendazole

Question 19

Retinopathy with keratitis in a newborn or a young child; mother has hx of drug abuse

Answer 19

CMV

Question 20

DOC for Ritter disease

Answer 20

Oxacillin

If MRSA, start Vanco

Question 21

Red, raised butterfly rash, in appearance with derma pain and rapid spread

Answer 21

Erysipelas

GAS- Strep pyogenes

Question 22

malignant pustule

• pustule to dark red fluid filled to necrosis of black eschar
• Dx and Tx?

Answer 22

Bacillus anthracis

anthrax
- Ciprofloxacin + Clindamycin

Question 23

Target eye lesion
Bull’s eye
-fever, headache, rash border, bite site
-Dx and Tx?

Answer 23

Borrelia burgdorferi
(Lyme disease)
-one of the ff: Doxycycline (best CNS penetration), Amoxicillin or Cefuroxime

Question 24

Tx of M. marinum

Answer 24

Clarithromycin + Ethambutol

Question 25

Tx of Actinomyces

Answer 25

high-dose IV Penicillin

Question 26

Nocardiosis

Answer 26

Trimethoprim sulfa | -first line tx

Question 27

Hemorrhagic mediastinitis associated with

Answer 27

Bacillus anthracis

Question 28

Hx of animal bite; cellulitis with lymphadenitis | -Dx and tx?

Answer 28

Pasteurella | -Tx: amoxicillin/clavulanic acid

Question 29

Hx of cat bite or cat scratches or no hx of bite but with pet kitty; lymohadenopathy with stellate granulomas; causes cat scratch dse -dx and tx?

Answer 29

Bartonella hensae | -self-limited but may give azithromycin

Question 30

Hx of shallow puncture wound through tsinelas or rubber shoes

Answer 30

Pesudomonas

Question 31

How is diphtheria diff from strep throat?

Answer 31

relative lack of fever, non-exudative throat

Question 32

inflamed tonsils or pharynx, purulent, fever

Answer 32

Strep tonsillopharyngitis

Question 33

white papules with red base on posterior palate & pharynx

Answer 33

Herpangina | Coxsackie viruses

Question 34

purulent tonsils, fatigue, LN

Answer 34

infectious mononucleosis | EBV

Question 35

low-grade fever with gradual onset of membranous nasopharyngitis; bull-neck LN

Answer 35

Diphtheria

Question 36

finely popular, eryhtematous eruption producing a bright red discoloration of the skin, which blanches on pressure, more intense along the creases of the elbows, axillae and groin; skin has goose pimple appearance and feels rough. After 4 days, rash begins to fade, and followed by desquamation

Answer 36

scarlet fever | GAB-S

Question 37

causes infectious arthritis in all ages except between 15-40

Answer 37

S. aureus

Question 38

causes infectious arthritis in 15-40 yo, sexually active and promiscuous

Answer 38

N. gonorrhea

Question 39

causes infectious arthritis in prosthetic joint

Answer 39

S. epidermidis

Question 40

causes infectious arthritis among px following GIT infection few weeks ago

Answer 40

Reiter's syndrome

Question 41

causes osteomyelitis among adults, children, infants without major trauma or special conditions

Answer 41

Staphylococcus

Question 42

causes osteomyelitis among neonates < 1yo

Answer 42

Staphylococcus

Question 43

causes osteomyelitis in sickle cell anemia patients

Answer 43

Salmonella cholerasuis or enteritica

Question 44

causes osteomyelitis in px with hx of trauma

Answer 44

Pseudomonas

Question 45

diff rash of rickettsia ricketsii vs prowazekii

Answer 45

ricketsii: includes palms and soles prowazekii: spares palms and soles

Question 46

maculopapular rash + cough, coryza, and fever

Answer 46

Measles/ Rubeola

Question 47

maculopapular rash + posterior cervical, cervical or auricular nodes

Answer 47

German measles or rubella

Question 48

maculopapular rash + slapped cheek looking then spread to trunk with central clearing

Answer 48

erythema infectiosum or 5th disease | parvovirus B19

Question 49

maculopapular rash + abrupt onset of fever with URTI for 3-4 days, fever disapperans and rashes appears on trunk and spread

Answer 49

Roseola or 6th disease

Question 50

preceded by rapid onset of fever, myalgia, ocular pain, hypesthesia; rashes blanch on pressure

Answer 50

Dengue fever

Question 51

Nagayama spot

Answer 51

roseola