Staph Scalded Skin Syndrome (SSSS)
Bullous impetigo. May only see this (remnants of former blisters)
Note pustules in the neck. Could be yeast, bacteria, viral
But here it is staph
Hot tub folliculitis
what is this? how different from SSSS?
Toxic epidermal necrolysis
Skin sloughs off full-thickness (epidermal-dermal junction is destroyed).
SSSS is more superficial (doesn't even scar). stratum granulosum only.
Cellulitis: clinical signs?
Signs of infection: rubor, calor, dolor, tumor
Blood cultures often neg
Appearance of erysipelas v cellulitis?
Erysipelas: well-demarcated edge. Peau d'orange texture.
Cellulitis: more spread out, less well demarcated.
Toxic erythema (redness due to throughout the body)
infected hair follicles
Streptococcal perianal disease: recurrent bright perianal erythema in children. likely due to strep.
The swelling and sharp demarcation are characteristic of erysipelas. The area involved is usually very tender. The patient usually feels quite ill. Allergic contact dermatitis and rosacea are in the differential diagnosis.
Involvement of perineum and genitalia --> Fournier's gangrene
(this pic due to circumcision)
What is this? What should I be looking for?
How is it different from HSV?
Look carefully here for vesicles. Lesions start out as vesicles, then become pustules.
HSV: grouped lesions, history of getting this every 6 months at same location.
HSV lesions are more sharply-defined, "punched out", rounded.
(HSV pic from internet, hopefully it's what it said it is!)
What condition? what are these called?
SSSS: what is the cause?
Staph aureus produces an endotoxin (exfolatin A, exfolatin B) that circulates, splits the skin at the superficial granular layer
Hot tub folliculitis.
Acne is NOT usually this uniform looking. Hot tub folliculitis often has pustules that look very monomorphic (the same) and uniform, with a spread of erythema away from the pustule of a few mm. This is also what staphylococcal folliculitis looks like.