Skin Flashcards
What is the difference between a macule and a patch?
size. Macule <.5, patch is >.5, both are flat and level to the skin
What is the difference between a papule and a plaque?
size. papule <.5, plaque is >.5. Both are raised and superficial.
What is the difference between a nodule and a tumor?
a nodule >.5 on the skin that extends deep, a tumor is a subcutaneous mass not on the superficial layer of the skin
What is the difference between a wheal and a comedo?
A wheal is swelling/hives, whereas a comedo is a plugged hair follicle filled with sebum (acne)
What is the difference between a pustule and a cyst?
size. <.5 for a pustule, >.5 for a cyst, both are filled with pus
What is telangiectasia?
spider veins very fine in color
What’s the difference between a vesicle and a bulla?
Size. <.5 and >.5cm , both have clear fluid
What is the difference between excoriation and lichenification?
scratching versus repeat rubbing causing thickening of the skin
What’s the difference between an erosion versus an ulcer?
an erosion is very defined, not very deep, more superficial, whereas the dermis is very deep, extending into many layers of the dermis
What is the difference between scaling and crusting?
secondary lesions
scale is flatlike , crust is hardened deposits
What is the difference between a fissure or atrophy?
secondary lesions
a fissure is linear, whereas atrophy is loss of skin elasticity
What’s the difference between petechiae and purpura?
petechiae is pinpoint and nonblanching, whereas purpura is hemorrhage of blood vessels (thicker), nonblanching
How much of the body weight does the skin take up?
16%
What are the five pigments that make up the skin?
Melanin (brownish), carotone (golden yellow, palms/soles), oxyhemoglobin (reddish) and deoxyhemoglobin (Cyanosis), bilirubin (yellow-brown)
What is the most important symptom when assessing rashes?
itching
What are things that could cause generalized itching without apparent rash?
dry skin, pregnancy, uremia, jaundice, lymphomas, leukemia, drug reaction, lice.
What do you measure sizes of skin lesions?
mm
What does the telagiectatic configuration look like?
dendrites
What does the reticulated configuration look like?
arteries going into capillaries