Skin Flashcards
Macular
Small, flat colour change Less than 1cm Ex. Freckles
Patch
Flat colour change More than 1cm
Papule
Shallow Ex. Nevus (mole)
Nodule
Deeper into dermis
Tumor
Larger, firm or soft
Urtricaria
Hives (wheals)
Vesicle
Fluid filled, raised Less than 1cm Ex. Mosquito bite
Bulla
Fluid filled, raised Greater than 1cm Ex. Blister
Cyst
Fluid filled, encapsulated Into dermis this tighter surface
Pustules
Not clear liquid (white or yellow)
Crust Lesion
Dried sebum, pie, or blood
Scale
Compact flakes of skin
Ulcer
Extends into dermis
Fissure
Linear cleavage
Excoriation
From an external source Reddening, rubbing
Atrophic Scar
Depression
Lichenification
Tightly packed papules Result of scratching
Laceration
Cut
Keloid
Hypertrophic scar Elevated & extended
Hemangioma
Raised from blood vessels
Port-wine stain
Flat on epidermis
Telangiectases
Blood vessels permanently dilated on surface Ex. Spider avulsions
Purpuric Lesion
Caused by blood flowing out of breaks in vessels and depositing in the tissue (extravascularly).
ie. Petechiae- red dots from blood vessels
ie. Purpura - petechiae become confluent patch
ie. Ecchymosis - bruise
Annular
Circular pigmentes lesion
Confluent
Pigmented lesions merge together, with no discernible outlines. Ex. Hives
Discrete
Independent lesions Ex. Acne
Grouped
Tightly packed vesicles/lesions Ex. Contact dermatitis Ex. Poison ivy
Gyrate
Twisted, snake-like lesions
Target
Concentric rings around lesion
Polycyclic
Annular lesions grow together, still discrete
Zosteriform
Lesions follows nerve track pathway Ex. Shingles (along armpit)
Linear lesion
Ex. Incision, scratch
ABCDE of Pigmented Lesions
Asymmetrical Border irregularities Colour variation Diameter over 6mm Elevation & Enlargement
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Nodule
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Wheal = superficial, raised, tansient, and erythematous. Slightly irregular shape due to edema.
Utricaria (hives) = Wheals that coalesce to form extensive reaction
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Vesicle = blister, elevated cavity containing free fluid. Less than 1cm.
Bulla = single-chambered in epidermis. Greater than 1cm.
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Cyst = encapsulated fluid filled cavity in dermis or subcutaneous layer, tensely elevated skin.
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Pustule = cavity filled with turbid fluid (pus)
cicumscribed and elevated
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Crust = thickened, dried-out exudate left when vesicles/pustules burst
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Scale = compact, dessicated flakes of skin
dry or greasy
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Fissure = linear crack with abrupt edges, extending into dermis
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Erosion = scooped-out but shallow depression. Superficial, epidermis lost, moist but not bleeding.
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Ulcer = deeper depression extending into dermis.
irregular shape, may bleed, and leaves scar when healed.
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Excoriation = self-inflicted abrasion, superficial, sometimes crusted.
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Scar = connective tissue (collagen) replaces normal tissue after skin lesion is repaired.
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Atrophic scar = depression of skin level due to loss of tissue. Thinning epidermis.
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Keloid = hypertrophic scar
= elevation of skin level by excess scar tissue.
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Lichenification = thickening of skin with production of tightly packed sets of papules, caused by prolonged intense scratching.
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Port Wine Stain = large flat macula, normally coving scalp or face along Cranial Nerve V. Present at birth.
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Strawberry mark (immature hemangioma) = raised, bright red, with well-defined borders, 2-3cm in diameter.
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Cavernous hemangioma (mature) = reddish blue, irregularly shaped, solid, spongy mass of blood vessels.
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Telangiectases = appearance of BVs on skinโs surface. Caused by vascular dilation, permanently enlarged vessels.
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Spider or Star Angioma = capillary radiations. Legs blanch with pressure. Associated with pregnancy, estrogen therapy, chronic liver disease, or may be normal.
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Venous Lake = dilation of venules and capillaries in star-shaped, linear, flaring pattern. Empty with pressure. Located near varicose veins, face, lips, ears, and chest.
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Petechiae = tiny punctuate hemorarhages, 1-3mm, round and discrete. Due to bleeding of superficial capillaries and do not blanch. May indicate abnormal clotting factors.
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Purpura = extensive patch of petechiae and echymoses, red to purple flat macular hemorrhage, over 3mm in diameter.
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Ecchymosis = purple patch resulting from extravasation of blood into the skin. >3mm
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Intertrigo (Candidaiasis) = scalding red, moist patches with demarcated borders, some loose sclaes, around genitals and inguinal folds. Caused by Candida fungus
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Impetigo = moist, thin-roofed vesicles with thin erythematous base. Rupture followed by thick yellow crust. Due to contagious bacterial infection.
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Atopic dermitis (eczema) = erthymatous papules and vesicles with oozing crust.
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Tinea Corporis (ringworm) = scales are hyperpigemented in white-skinned ppl, and depigmented in darker skin tones.
What supplement helps promote wound healing and skin integrity?
zinc