Derm Flashcards
What is the outermost layer of the epidermis?
stratum corneum
What does the dermis layer contain?
- blood vessels
- nerves
- connective fibers
- accessory organs (hair follicles, sebaceous glands, sweat glands, nerves)
circumscribed area of change in skin color < 1 cm w/o elevation or depression (flat)
macule
macule that is larger than 1 cm
patch
circumscribed, solid superficial elevations <1 cm
papules
papules > 1 cm, palpable, in dermis or subcutaneous tissue (may be above or below skin surface)
nodules
usually well-defined elevated confluence of papule >1cm
plaques
circumscribed epidermal elevations < 0.5 cm; contain serous fluid
Vesicles
large vesicle > 0.5 cm containing serous fluid
Bulla
circumscribed, small elevations filled with purulent exudate, <1 cm
Pustules
plateau-like edematous elevations, papules or plaques, pink or red; transient
Wheals
dry or greasy flakes of stratum corneum
scales
dried serum, blood, or pus with debris on skin surface
Crusts (scabs)
shallow, hemorrhagic linear excavations
Excoriation (scratch marks)
loss of all or portions of epidermis from physical abrasions, vesicles, or bullae
Erosions