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Permanant superficial vascular dialation: spider veins, connective tissue diseases, radiation skin damage
unilateral arrangement of lesions in the cutaneous distribution of a nerve route/dermatome. (e.g. Herpes zoster)
(<1cm dia.) flat primary lesion. circumscribed. e.g. Freckles flat nevi, petechiae, measles. (top right pic is a macule, bottom right is a patch)
( <1cm dia.) something you can feel (elevation, solid, circumscribed). solid or cystic. primary lesion. e.g. Elevated nevus(mole), wart (verruca)
(>1cm and <2cm dia.) solid or cystic. primary. Deeper than papule. e.g. Xanthoma, fibroma, intradermal nevi.<pic _0147_2p.jpg>
(papules coalesce to >1cm dia.) plateau, sometimes crusted. primary. e.g. Psoriasis (pic), lichen planus.
cafe au lait spot
Large round or oval patch of light brown pigmentation, usually normal. >6 macules >1.5cm diameter indicate neurofibromatosis
Encapsulated, fluid-filled cavity in dermis or subcutaneous layer. Tense, elevated skin. |e.g. Sebaceous (follicular) cyst
extremely dry areas of thin plates of cornified epidermal cells that form flakes on the skin; secondary.
Superficial, raised, transient, erythematous; slightly irregular due to edema. e.g. Mosquito bite, allegic reaction, demographism.
( <1cm in dia.) circumscribed, elevated. primary. serous. "blister". e.g. Herpes simplex, early varicella, herpes zoster (shingles), contact dermatitis.
( >1cm vesicle) large primary vesicle. Superficial in epidermis. Usually single chambered. e.g. Friction blister, burns
(depression) loss of tissue of skin surface. Thinning of epidermis; secondary. e.g. Striae
deep depression into dermis, crater-like, irregular. May bleed, leaves scar. secondary. e.g. pressure sore, chancre
dry, leathery thickening of skin as a result of repeated rubbing or scratching area; secondary lesion; chronic atopic dermatitis, neurodermatitis
dried exudate of serum, sebum, purulent material on skin surface; secondary. e.g. Impetigo, scab after abrasion, weeping eczema
Iris, resembles iris of eye, concentric rings of color in the lesions (e.g. Erythema multiforme)
Hyperpigmentation in Black, Asian, American Indian, and Hispanic newborns. careful not to interpret this as child abuse.
Brown-black pigmented areas, or linear bands, or streaks along edge of nail. Normal in dark skinned people, abnormal in light skinned people.
3 normal erythematous neonatal states
Beefy red flush from vasomotor instability, harlequin color change, erythema toxicum (pic)
Bluish color around lips, fingertips, feet, and toenails. Normal = < few hours. Persistent = cyanotic congenital heart disease.
Transient mottling in trunk and extremities. Persistent/pronounced mottling occurs Down syndrome or prematurity.
Tiny whit papules on neonate face. Sebum occluded follicle openings. Will resolve spontaneously. Advise parents not to squeeze.
Hyperpigmentation, "liver spots", small flat brown macules. Aging adults. Excess sun exposure. No treatment req.
Actinic (senile/solar) keratosis
Red-tan scaly plaques, progress to raised and rough. Premalignant to squamous cell carcinoma.
Superficial scooped out shallow depression. Epidermis lost. Most, no bleeding. Heals w/out scarring.
Decubitus ulcer (pressure ulcer)
Appear over bony prominences, from impeded blood delivery. Ischemia and cell death. Measured in 4 stages.
Stage 2 decubitus ulcer
Partial- thickness skin erosion w/ loss of epidermis or also dermis in decubitus ulcer.
Stage 3 decubitus ulcer
Full-thickness pressure ulcer. Resembling crater. Extends into subcutaneous tissue. Can not see muscle, bone, tendon.
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