2026 COMPLETE QUESTIONS AND
CORRECT ANSWERS
◉Cellulitis. Answer: Bacteria (Gram Positive):
Streptococcus (beta hemolytic strep), Staph aureus (MRSA)
◉Cellulitis Symptoms:. Answer: Diffused pink to red colored skin,
warm to touch, and may become abscessed
If red streaks radiating from infection it has spread to lymph nodes
(lymphangitis)
Usually within the deep dermis and is poorly demarcated (poor
boundaries)
Most common location is the lower legs
-->If pt. has DM and develops cellulitis watch for osteomyelitis
◉Cellulitis treatment. Answer: First line: Abscess/cellulitis is I&D (if
<5 cm no PO antibiotic needed) • Check for tetanus vaccine status
Nonpurulent: Cephalexin (Keflex) 500 mg or Dicloxacillin q 6 hours
for 5-10 days
,Purulent (MRSA): Wound culture o Follow up in 48 hours Bactrim
BS BID x 10 days o If you suspect osteomyelitis order an MRI
If allergic to Penicillin: Azithromycin (Z-Pack x 5 days)
◉Erysipelas:. Answer: Bacteria: Group A Streptococcus
Located: • Involves upper dermis and superficial lymphatics • Found
on the cheeks and shins
◉Erysipelas: Symptoms. Answer: Symptoms: • Bright red plaque or
induration with sharp or elevated margins on the face or lower legs
• If fever and chills present pt. is septic (hospitalization is
recommended)
◉Erysipelas: Treatment. Answer: If treating facial erysipelas assume
MRSA is present.
Use appropriate antibiotics or refer to ER if septic
Dicloxacillin QID, Cephalexin or Clindamycin x 10 days
If allergic to Penicillin: Azithromycin (Z-Pack x 5 days)
◉MRSA: Treatment. Answer: Bactrim
Doxycycline
Minocycline
,Clindamycin
--> If patient is allergic to Sulfa do not use Bactrim
◉Human bites. Answer: "Dirtiest" bite of all. Watch for closed-fist
injuries of the hands (may involve joint capsule and tendon
damage). Eikenella corrodens & numerous bacteria may be involved
◉Animal bites:. Answer: Cat bites have a higher risk of infection that
dog bites Redness, swelling, pain
Systemic symptoms may develop within 12-24 hours
◉Treatment for human bites and animal bites. Answer: •Augmentin
875/125 mg BID x 10 days or IV antibiotics in ER Penicillin Allergy §
Doxycycline BID or Bactrim DS BID PLUS Flagyl BID or Clindamycin
TID
Also give Tetanus booster if needed
Evaluate for rabies prophylaxis
◉Tetanus Vaccination. Answer: Initial series (3 doses) DTaP (infants
to age 6): 5 doses Ages 7 and older
Td or Tdap Need every 10 years for lifetime Common reaction: pain
at injection site in 24-48 hours
, Contaminated wounds: give one dose if last dose was more than 5
years ago or is due
◉Impetigo. Answer: Bacteria (Gram Positive): Beta Streptococcus or
Streptococcus aureus
Most common bacterial skin infection in young children ages 2-5
◉Impetigo symptoms. Answer: Itchy pink-red lesions, evolve into
vesiculopustules that rupture easily, honeycolored crusts (from
dried serous exudate)
Very pruritic and contagious
◉Impetigo Treatment. Answer: Order C&S of fluid
Severe Case= Keflex or Dicloxacillin QID x 10 days
Penicillin Allergy o Give Azithromycin 250 mg x 5 days or o
Clindamycin x 10 days