Questions with Correct Answers
1. Fungal skin infections - ANSWER · Candidiasis- bright, beefy red rash treat
with topical antifungal,
· Dermatophytoses - the tineas (ringworm)
· Onychomycosis treat with Terbinafine for 6-12 weeks (only 73-79%
effective, educate patient.
· Fungal infections survive on keratin, so considered superficial.
· Pathogens: Epidermophyton, trichophyton, microsporum.
· Those at risk are DM and immunocompromised.
· Diagnostics: KOH
2. Tinea corporis
(Ringworm of body) - ANSWER Hx of erythematous round and elevated
pruritic lesion that grows in size & starts to clear in the center
Miconazole 2% cream BID x4 weeks, Clotrimazole 1%, Terbafine 1%
3. Tinea capitus (ringworm of head) - ANSWER Children common. Painless
bald spot, may have kerion that looks like honeycomb, inflammation. Boggy
mass containing broken hairs and oozing purulent material from follicular
orifices
,4. Systemic antifungals - Griseofulvin BID for 2-4 months or 2 weeks after
negative cultures. Teratogenic - use 2nd method of contraception.
OR terbinafine cream
5. Tinea versicolor (skin, AKA pityriasis versicolor) - ANSWER Round or
oval lesions of hypo or hyperpigmentation macule, located mainly on back
chest, arms, sometimes neck/face. Sometimes very fine scales seen. Agent P
oribiculare causes round, pityrosporum ovale causes oval
Clotrimazole 1% cream and solution BID up to 4 weeks
6. Bacterial infections of the skin - ANSWER · Impetigo
· highly contagious
7. Cellulitis
· Keflex (1st gen cephalosporine) 10-14 days, or dicloxacillin,
· PCN allergy use Erythromycin.
· non purulent assume staph aureus
8. Purulent cellulitis
· I&D first line
· NO 1st gen cephalosporine
· Consider MRSA- Bactrim, Cleocin, Doxycycline
9. You prescribe a topical medication and want it to have maximum absorption
so you choose the following vehicle:
A. Gel
B. Lotion
C. Cream
D. Ointment - ANSWER D
,10.One of the mechanisms of actions of a topical corticosteroid preparation is
as:
A. An antimitotic
B. An exfoliant
C. A vasoconstrictor
D. A humectant - ANSWER C
11.To enhance the potency of a topical corticosteroid, the prescribed
recommends that the patient apply the preparation:
A. To dry skin by gentle rubbing
B. And cover with an occlusive dressing
C. Before bathing
D. With an emollient - ANSWER B
12.Which of the following is least potent topical corticosteroid?
A. Betamethasone dipropionate 0.1% (Diprosone)
B. Clobetasol propionate 0.5% (Cormax)
C. Hydrocortisone 2.5%
D. Fluocinonide 0.05% (Lidex) - ANSWER C
13.Antihistamines exhibit therapeutic effect by:
A. Inactivating circulating histamine
B. Preventing the production of histamine
C. Blocking the activity of histamine receptor sites
D. Acting as a procholinergic agent - ANSWER C
14.A possible adverse side effect with the use of first generation antihistamines
such as diphenhydramine in an 80 yr old man is:
A. Urinary retention
B. Hypertension
C. Tachycardia
D. Urticaria - ANSWER A
, 15.Which of the following medications is likely to cause the most sedation?
A. Chlorpheniramine
B. Cetirizine
C. Fexofenadine
D. Loratadine - ANSWER A
·
16.Impetigo - ANSWER Honey crusted plaques, usually on face
Bullous: begin as small vesicles that rupture easily with serous fluid turning
into crust
Nonbullous, vesticulopustular: thick, adherent lesions, dirty yellow-colored
crust with erythematous margins
Treatment:
Clean lesions. Bactroban TID x 7 days. Antibiotic (Keflex, Augmentin,
Cloxacillin). With no treatment, it is self-limiting 2-3 wks
17.follilculitis - ANSWER Staphylococcus. Multiple small papules on
erythematous base, can be large yellow white tender pustules in adults.
Common in places hair is present, widespread is characteristic, bumpy rash,
no itching.
Treatment:
Only if becomes infected. Large lesions cleansed with weak soap solution,
followed by soaking with saline or aluminum subacetate BID. TAO can be used
BID for 5 days. Oral ABT 1st gen cephalo. if resistant
18.Localized cellulitis - ANSWER The typical lesion of cellulitis is wide,
diffuse area of erythematous skin that is warm and tender to palpation.
Infection is occasionally accompanied by severe edema. Systemic symptoms
such as fever, chills, and malaise may also be present.