Exam 2 Flashcards
Why is a skin assessment important? What general information about the body as a whole is obtained through a skin assessment? Know important issues to ask when taking a history about the skin.
- You can gather clues about health problems through the skin.
- Information about body’s circulation, nutrition & signs of systemic disease.
- Past history of skin disease, change in pigmentation/color, change in mole size/shape/color/tenderness, dryness/moisture, pruritus, bruising, rash/lesion, hair loss, change in nails, etc & Rx medication
What is pallor
- Extreme or unusual paleness; skin takes color of connective tissue (collagen); common in anxiety or fear.
- Observe in mucous membranes, lips & nail beds
What is Erythema
- Intense redness from excess blood from dilated superficial capillaries
- Expected with fever, local inflammation or emotional reactions in vascular flush areas
What is cyanosis
- Bluish discoloration of the skin resulting from poor circulation or inadequate oxygenation of the blood.
- Best seen in lips, nose, cheeks, ears & oral mucous membranes.
- Most conditions causing this also cause decreased oxygenation of the brain
What is jaundice
- Yellowing of skin; indicates rising amounts of bilirubin in blood.
- First noted in junction of hard & soft palates in mouth and in sclera of eye
How should we effectively assess skin temp
use backs of hand to palpate person; skin should be warm and temperature should be bilaterally equal
What is diaphoresis and what can it indicate
- profuse sweating (perspiration) - accompanies increased metabolic rate
- can indicate anxiety, pain or low BP
What is dehydration and what are some signs
- A serious reduction in the body’s water content
- dry mucous membranes, lips, decreased skin turgor
How to assess for turgor
- Infants: test mobility of skin over abdomen
- Adults: punch a large fold of skin on anterior of chest under clavicle
- Can be affected by dehydration, extreme weight loss and age
Why is an infant more susceptible to dehydration
- Higher body water content along with higher metabolic rates
- They require greater volumes of water to maintain fluid equilibrium
- Skin is thin, smooth & elastic therefor much more permeable than an adult’s
What is a papule
- small (less than 1 cm in diameter), solid, raised lesion on surface of the skin
- something you can feel
- caused by superficial thickening of dermis
ex: mole, wart
What is a nodule
- solid, round or oval elevated lesion 1 cm or more in diameter
- may extend deeper into dermis than papule
What is a tumor
- larger than a few centimeters in diameter
-firm or soft
- deeper into dermis; may be benign or malignant
What is a wheal
- superficial, raised, transient, and erythematous
- slightly irregular shape from edema
What is a pustule
raised spot on the skin containing pus
What are the abcde danger signs of lesions
- Asymmetry: not regularly round or oval
- Border Irregularity: ragged edges
- Color variation: areas of brown, tan, black, blue, red or combination
- Diameter: greater than 6 mm
- Elevation/enlargement
Describe skin developmental considerations of infant
newborns with brown/black skin have lighter skin tone than parents because of immature pigment formation; full melantonic color event in nail beds & scrotal folds
Describe skin developmental considerations of adolescence
- increased sebaceous gland activity which creates oiliness and acne
- acne lesions may appear as early as 7-8 years and peak at 14-17 in girls and 16-19 in boys.
- facial hair appears on boys first on lip, then cheeks and below lip, last on chin
- noticeable enlargement of thyroid cartilage causing deeper voice
Describe skin developmental considerations of pregnant women
- striae appear during 2nd trimester on abdomen, breasts and sometimes thighs
- vascular “spiders” are common because of increased estrogen
- thyroid gland enlarges slightly because of hyperplasia of tissue & increased vascularity
Describe skin developmental considerations of the elderly
-senile lentigines (liverspots): clusters of melanocytes appearing after extensive sun exposure on forearms & back of hand
- more prominent facial bones & orbits
- sagging facial skin as a result of decreased elasticity
- decreased subcutaneous fat & moisture in skin
What is a mongolian spot
- common variation of hyperpigmentation in newborns Black (90%), Asian (80%), American Indian (80%)
- blue/black to purple area at sacrum, buttocks and sometimes abdomen, thighs, shoulders or arms due to deep dermal melanocytes
- gradually fades in first year, frequently still lightly visible in adulthood
What is a stork bite (salmon patch)
- nevus simplex
- flat, irregularly shaped red/pink patch found on forehead, eyelid or upper lip but most commonly at back of neck
- usually fades in first year
What is a linea nigra
dark line of pigmentation from the umbilicus extending to the pubic area
What are striae
(lineae albicantes) silvery white or pink scar tissue formed by stretching of abdominal, breast and sometimes thigh skin with pregnancy (2nd trimester) or obesity
Describe the capillary refill test
- Pressure is applied to the nail bed until it turns white (called blanching) and once the tissue has blanched, pressure is removed while the patient holds their hand above their heart. Return of blood is indicated by the nail turning back to a pink color.
- healthy return is 1-2 seconds
- indicates status of peripheral circulation
Describe normal shape and contour of nails
- surface is slightly curved or flat; posterior & lateral folds are smooth and rounded
- 160 degrees
- firm to palpation
Describe clubbing
- occurs with congenital heart disease and neoplastic & pulmonary diseases which cause release of growth factors & promote vessel growth
- angle straightens out to 180 degrees, nail base feels spongy
- can reverse if primary disease is treated
What is pruritus and what can it indicate
itching; most common skin symptom.
- occurs with dry skin, aging, drug reactions, allergy, obstructive jaundice, lice etc
What is diaper rash and what can cause it
- diaper dermatitis
- red, moist maculopapular patch with poorly defined borders in diaper area extending along inguinal & gluteal folds
- infrequent diaper changes or occlusive coverings
- inflammatory diseased caused by skin irritation from ammonia, heat, moisture & occlusive diapers
What is acne
- increase in sebaceous gland activity creating increased oiliness & acne
- in milder form of open comedones (blackheads) & closed comedones (whiteheads)
Describe herpes zoster (shingles). What can it pose a risk to
- caused by varicella-zoster virus
- small grouped vesicles emerge along root of cutaneous nerve, then pustules then crust.
- accuse appearance, unilateral, doesn’t cross midline
- commonly on trunk but can be anywhere
- most common in adults 50+
- can pose risk to eye if on CN V
Describe petechiae
tiny punctate hemorrhages 1-3 mm; round & discreet; dark red, purple or brown in color.
- caused by bleeding from superficial capillaries
- may indicate abnormal clotting factors
- most diseases that cause bleeding & micro embolism formation are characterized by petechiae in mucous membranes & on skin.
- inspect in mouth, especially buccal mucosa, and conjunctivae
Describe purapura
- confluent & extensive patch of petechiae & ecchymoses; >3 mm, flat
- seen in scurvy & thrombocytopenia
- occurs in old age as blood leaks from capillaries in response to minor trauma and diffuses through dermis
Describe hematoma
a bruise you can feel; elevates skin & seen as swelling
Describe ecchymosis
purplish patch resulting from extravasation of blood into skin, >3mm
Describe how to assess and what is the function of CN V
- trigeminal nerve
- facial sensation of pain or touch are mediated by 3 branches
- assess by gently touching 3 sections on each side of patient’s face & have them tell you when they feel it
Describe how to assess and what is the function of CN VII
- facial nerve
- forms expressions by facial muscles
- facial muscle function is bilaterally symmetric except for occasional quirk or wry expression
- assess by having patient smile, wrinkle forehead, pucker lips, show teeth & puff out cheeks; both sides of face should move the same way