Skin and Cutaneous Disorders Flashcards
(50 cards)
What antibiotic should be added to the typical serious cellulitis treatment regimen to treat organisms associated with necrotizing fasciitis?
Clindamycin
What syndrome can cause recurrent viral-like illnesses and aphthous ulcers in children?
Periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis syndrome
Impetigo treatment is MRSA is suspected
Bactrim
Impetigo treatment if systemic
Dicloxacillin, Cephalexin
Impetigo treatment if topical
Mupirocin, Retapamulin
What post-infectious sequelae are associated with impetigo?
Rheumatic fever and poststreptococcal glomerulonephritis (in GAS-associated impetigo)
Intermittent, colicky abdominal pain in a patient with HSP is suggestive of what intra-abdominal process?
Intussusception
Small vessel vasculitis with IgA deposits in skin or kidney;
dx?
HSP
What acquired immunodeficiency syndrome-defining illness resembles molluscum contagiosum with widespread centrally umbilicated skin lesions?
Disseminated cryptococcus
What should be a consideration in recurrent fungal infections?
Diabetes alters the urogenital flora making fungal infections more common and can be screened with historical information of polyuria or point of care testing with a finger-stick blood test for glucose.
What is the typical appearance of squamous cell carcinoma?
Irregular growth with erythema, induration, inflammation, crusting, or oozing
Antibiotic of choice for mild erysipelas
Penicillin
Up to how long after discontinuation of a suspected agent can Stevens-Johnson syndrome occur?
4 weeks
Flu like prodrome, urethritis, rash;
dx?
SJS
What is the treatment of choice for tinea versicolor?
Topical antifungals (e.g., terbinafine, azole antifungals)
Tx mycobacterium marinum
Clarithromycin
Minocycline or doxycycline
Bactrim
What is a life-threatening infection of the perineum that can begin as a cellulitis?
Fournier’s gangrene is a rapidly progressing infection of the skin, fat, fascia, or muscle that requires immediate surgical consultation to prevent further spread.
Cause of staph scalded skin syndrome
exotoxin producing Staph aureus
(+) Nikolsy bc sloughs
spares mucous membranes
Tx for staph scalded skin syndrome
Nafcillin or oxacillin
Supportive care
What sexually transmitted infection has been associated with erythema nodosum?
Chlamydia
First line treatment for erythema nodosum
NSAIDs
How does pemphigus vulgaris differ from bullous pemphigoid in presentation?
Patients with pemphigus vulgaris are often younger with painful, flaccid bullae which may involve the mucous membranes and are Nikolsky sign positive
Tx for widespread bullous pemphigoid
Prednisone
Common causes of allergic dermatitis
Poison ivy (uroshiol)
Nickel
Cobalt
Potassium dichromate
