Primary Lesions Flashcards
Bulla
Is a fluid filled sac aka blister 0.5cm-2cms
Severe poison oak, ivy dermatitis, second degree burns
Predisposes to DFV and infection
Comedo
Plugged pilosebaceous duct, exfoliative.
Formed from sebum and keratin
Blackhead or whitehead
Cyst
Semisolid or fluid filled encapsulated mass extending deep into the dermis
Macule
Flat, pigmented, circumscribed
Aka freckle < 0.5cm
Freckle, rubella
Nodule
Firm, raised deeper than papule extends into the dermal layer
Aka swollen lymph nodes, lipoma, skin cancer (usually cancer)
0.5-2cm
Intradermal Nevus or lipoma
Not movable!
Papule
Firm, palpable, inflammatory, raised may be same color of skin or pigmented Mole/wart Up to 0.5cm Acne, lichen planus Mole/wart
Patch
Flat, pigmented, circumscribed
Allergy state from testing
> 0.5cm
Herald patch (pityriasis rosea)
Plaque
Circumscribed soli, elevate
Elevation above the skin occupies larger surface in comparison with height
Psoriasis
> 0.5cm
Pustule
Raised, circumscribed contains purulent material making it yellow-white color Boils, acne, impetigo < 1cm, but size variable Acne pustule, impetigo Furuncle
Tumor
Elevated solid, extends into the dermal and subcutaneous layers
Tumor
> 2cms
Dermatofibroma
Vesicle
Raised, circumscribed fluid filled Blister, chicken pox, herpes, shingles, second degree burn <0.5 cm Chicken pox, herpes simplex Contains serous fluid
Wheal
Raised, firm with intense localized skin edema Color varies from pale pink to red Urticaria - hives, insect bite Varies in size ITCHY
What are the primary raised lesions of the skin?
Papules, nodules, tumors
What are the primary fluid filled lesions of the skin?
Vesicles and bulla
What are the irregular primary lesions?
Wheal
