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Epidermis
the outermost layer containing epidermal ridges
Dermis
the middle layer, subdivided into the papillary layer (top) and the reticular layer (bottom)
it contains blood vessels and dermal papillae
Subcutaneous layer
the deepest layer, primarily composed of fatty tissue
Bacterial infections
conditions like cellulitis present as spreading redness and swelling on the limbs
require antibiotics treatment
Fungal infections
often occur in the skins folds (intertrigo/candidiasis) such as under the breasts or in the groin
they are treated with antifungual medications like Miconazole Nitrate (found int products like Desenex)
Viral infections and nerve involvement
shingles (herpes zoster) often follows specifics dermatomes ( areas of skin supplied by single spinal nerve)
Infestations
scabies is characterized by the presences of a “burrow” (the path the mite takes under the skin) and scattered red papules
abscessess
large, painful, fluid-filled lumps may require incision and drainage to remove infected material
Use this rule to evaluate mole or lessions for potential melanoma
A: asymmetry: one half does not match the other
B: Borders: edges are uneven, notched, or blurred
C: color: the lesion has multiple colors or is dark black
D: Diameter: the lesion is greater than 6 mm
E: evolving: there is a change in size, shape, or color
Paronychia
an infection of the tissue adjacent to the nail
Subungual hematoma
a collection of blood under the nail, usually caused by trauma
it can be treated by drilling a small hole in the nail to release pressure and blood
What is impetigo
skin infection that is highly contagious
commonly on face (mouth or nasal area)
S/S of impetigo and the sequence how it presents
it will start out as itchy, painful red and blister or bump… the area doesn’t seem to heal but spreads
if it blisters it can rupture, if not blisters spread
the lesion will start to leak fluid that is honey-colored (strep) clear or pus (staph)
It will leave behind red patches that crust over with yellowish brown crust, a painful swollen lymph node may present near the site because the immune systems recognition of the bacteria in body
Treatment for impetigo
topical or oral antibiotics
Remove the crust prior to applying antibiotic ointment with warm water and antibacterial soap (this is where the bacteria live and ointment need to come into contact with the skin to kill the bacteria)
Not contagious after 48 hours with topical ointment and 24 hours for oral antibiotics
educate about completing full dose of treatment, especially if the pt has strep impetigo: can develop kidney problems.
How to prevent spreading of imetigo
touching the sire can spread it to another site on body or others
meticulous hand hygiene along with placing patient in contact precautions
prevention of scratching or touching sites on the body and keep the nails short along with performing regular hand hygiene
What is cause of cellulitis
results from an infection by group A beta-hemolytic streptococci or staphylococcus aureus
a break in skin integrity almost always precedes infections
affects the subcutaneous tissue and dermis
What are signs and symptoms of cellulitis
a tender, warm, erythematous, swollen area, which is usually well demarcated
warm, tender streak following the course of a lymphatics vessel
fever and chills
Diagnosis of cellulitus
can be made from clinical presentation
gram stain and culture of skin tissue
if patient acutely ill, blood cultures may be taken
Treatment of cellulitus
preventing widespread skin destruction requires I.V. or oral antibiotic therapy depending on the severity of the infection
Nursing care for Cellulitis
monitor the patients vital signs (especially temp) every 4 hours
assess the patient every 4 hours for an increase in the size of the affected area or worsening of pain
administer an antibiotic, an analgesic, and warm compresses, as ordered
What is herpes zoster (shingles)
acute unilateral and segmental inflammation of certain nerve roots
usually appearing in adults over age 40
confined to a dermatome (area of skin innervated by sensory fibers from a single spinal nerve)
sever neuralgic pain occurs in peripheral areas fed by the nerves arising in the inflamed ganglia
What is the cause and S/S of herpes zoster
cause: results from varicella-zoster virus, a herpsvirus that also causes chicken pox
S/S: onset is fever and malaise, within 2-4 days, severe deep pain, pruritus, and paresthesia ( burning, itching, prickling, or tingling sensations) or hyperesthesia (increased sensitivity to touch) develop- usually on the trunk and occasionally on the arms and legs
Pain may be continuous or intermittent
Diagnosis of herpes zoster
Dermatomic distribution of lesions is usually sufficient to confirm the diagnosis
unusual cases, a Tzanck smear, biopsy, and viral culture may be needed to confirm the diagnosis
nursing care and treatment for herpes zoster
relief of itching and neuralgic pain require calamine lotion or another topical antipruritic and pain medication (if bacteria have infected ruptured vesicles, treatment includes a systemic antibiotic
Promote patient comfort
if lesions are severe and widespread, apply wet dressing (if rupture apply cold compress)
watch an immunosuppressed patient closely for signs and symptoms of dissemination (generalized lesions) and central nervous system infection (headache, weakness, fever, and stiff neck)
Postherpetic Neuralgia
most common complication of shingles
condition affects nerve fibers and skin, causing burning pain that lasts long after the rash and blisters of shingles disappear
certain anti-seizure medications, including gabapentin and pregabalin (lyrica), can lessen the pain of postherpetic neuralgia
Intertrigo
superficial inflammatory skin conditions of the skins flexural surfaces, prompted or irritated by warm temp, friction, moisture, maceration and poor ventialtion
highest among obese patients
commonly becomes secondarily infected with Candida
area affected axilla, infra-mammary creases, abdominal folds, perineum
How to treat Intertrigo
typically treated topically
if Candida suspected use anti-fungal cream or powder
apply thin layer of topical cream two times per day
Scabies
cause by an infestation of the skin by the human itch mite
burrows into the upper layer of the skin where it lives and lays its eggs
What are causes of scabies and S/S
sexually active individuals, presence of many children in the house, poor housing
S/S: skin rash (caused by sensitization to the protein and feces of the parasite), pruritus (severe itching), scabies rash, burrows in skin (causes by female scabies mite)
Scabies nursing and medical mnagement
contact precautions
treatment: administration of scabicidal agent as well as appropriate antimicronial agent if a secondary infection has developed
restore skin integrity: have patients avoid rubbing and scratching
education: decontaimination
Abscess
appears as swollen, pusfilled lump under the surface of the skin, if infection might have high temp and chills
may be treated with antibiotics (PO) or IV if severe, with systemic symptomology
may be lanced and drained, and nursing does wound care
often the wounds are packed with medicated gauze, covered with a wet to dry dressing