Infectious Disease

Question 1

Perianal itching at night

Answer 1

Pinworms - enterobius vermicularis

Question 2

Management pinworms - enterobius vermicularis

Answer 2

Albendazole, mebendazole

Question 3

Diagnosis of mononucleosis

Answer 3

1. Heterophile Monospot Ab test
2. Peripheral smear - 50% lymphocyte with > 10% atypical lymphocytes
3. LFTs

Question 4

Parvovirus B19

Answer 4

Erythema infectiosum

Question 5

Slapped cheek rash on face with circumoral pallor, lacy reticular rash

Answer 5

Erythema infectiosum - Parvovirus B19

Question 6

Paramyxovirus

Answer 6

Mumps

Rubeola (Measles)

Question 7

Patients with mumps are usually infectious _________ prior to and __________ after the onset of parotid swelling

Answer 7

48 hours prior to

9 days after

Question 8

Complications of mumps

Answer 8

Orchitis in males

MC cause of acute pancreatitis in children

Question 9

Prodrome of high fever 3-5 days, only childhood exanthem that starts on trunk and spreads to face

Answer 9

Roseola infantum (sixth disease)

Question 10

3 day rash, lymphadenopathy, fever, cough with forchheimer spots

Answer 10

Rubella (German Measles)

Question 11

Forchheimer spots

Answer 11

Macules or petechiae on soft palate - seen in rubella (german measles)

Question 12

Teratogenic especially in the first trimester

Answer 12

Rubella (German Measles)

Congenital syndrome - deafness, cataracts, TTP, mental retardation, heart defects

Question 13

In young women with Rubella, associated symptoms include:

Answer 13

Photosensitivity

Joint pains

Question 14

3 C’s: cough, coryza, conjunctivitis followed by 7 day rash fading from top to bottom

Answer 14

Rubeola (measles)

Question 15

Koplik spots

Answer 15

Rubeola (measles)

Small red spots in buccal mucosa with pale blue/white center

Question 16

__________ reduces mortality in all children with measles

Answer 16

Vitamin A

Question 17

Complications of measles (rubeola)

Answer 17

Diarrhea
Otitis media
Pneumonia
Conjunctivitis
Encephalitis

Question 18

Vesicular lesions with erythematous halos

Answer 18

Coxsackie virus - HFM

Question 19

3 phases of pertussis

Answer 19

1. Catarrhal phase
2. Paroxysmal phase
3. Convalescent phase

Question 20

Diagnosis of pertussis

Answer 20

PCR of nasopharyngeal swab - gold standard

Lymphocytosis

Question 21

Management of pertussis

Answer 21

Supportive tx: oxygenation, nebulizers

Erythromycin, Azithromycin