Exam 3 Dermatology Flashcards
Terms to describe Oral Lesions
1) Erythema =
2) Ecchymosis =
3) Petechiae =
4) Primary lesions (3)
5) Secondary lesions
6) Distribution pattern =
7) Configuration and arrangement =
1) Redness
2) Bruising
3) Pinpoint red or purple spots
4) Macule = flat, distinct, discolored < 1cm
Papule = raised < 1cm
Vesicle = raised, fluid filled < 1cm
5) Caused by scratching or rubbing primary lesion
6) Pattern of lesions on body
7) Size, shape, arrangement of lesion/group of lesions
How to differentiate from petechiae and a rash?
Petechiae does not blanch - if it does, it is more concerning bc could indicated idiopathic thrombocytic purpura = capillary leakage of blood vessels/ rash
Bacterial Skin Infections =
(3)
-Skin normally harbors bacterial flora (2)
= any process leading to breach in the skin barrier (trauma, abrasions, shaving, insect bites)
1) Impetigo
2) Folliculitis, Furuncle, Carbuncle
3) Cellulitis
Risk Factors for Bacterial Skin Infections (2)
- Close contact with active bacterial skin infection
- Immunocompromised (HIV, DM, chemo)
Impetigo =
= Papules -> Vesicles surrounded by erythema -> pustules that break down to form thick adherent crusts with a characteristic golden appearance
Impetigo
- Most frequent in __-__ years
- Lesions usually found where? and are ______
- 2-5 yo
- Face (around mouth and nose) + Extremities, are Pruritic
Tx for Impetigo
1) Topical =
2) Oral =
1) Mupirocin (Bactroben)
2) Oral Cephalosporins
How do you prevent the spread of Impetigo ?
Is it likely to leave scarring?
Hand Washing
No
Folliculitis =
What is formed? (2)
= infection of the hair follicle; purulent material extends into the dermis and subcutaneous tissue
1) Furuncles (small abcesses) -> Carbuncles = several inflamed follicles into a single inflammatory mass
Folliculitis
1) Seen in areas exposed to?
2) What areas does folliculitis occur? (4)
3) Caused by what bacteria? often where?
1) Friction and Perspiration
2) Back of neck, face, axillae, buttocks
3) Pseudomonas aeruginosa, exposure to hot tubs, whirlpools
Tx for Folliculitis = (2)
Never do what?
Antibiotics?
1) Warm compresses to bring drainage
2) Incision and Drainage* - obtain culture to rule out MRSA
- NEVER SQUEEZE! bc can squeeze it squeezes into tissues too
- Role of antibiotic not clear in evidence
Cellulitis =
= Inflammation of the skin and subcutaneous tissue that may involve the upper dermis and superficial lymphatics - usually a complication of a wound or trauma
Characteristics of Cellulitis =
Acronym WIFEES
Warm Inflammation of regional lymph nodes Fever Erythema Edema "Streaking"
2 Types of Cellulitis
1) Periorbital Cellulitis
2) Perianal Cellulitis
Cellulitis may progress to
Systemic infection rapidly -> sepsis
So we want to monitor closely, draw a circle around effected area
Tx for Cellulitis (3)
- Elevate, Rest, Immobilization
- 1st option = Oral Antibiotics
- 2nd option = IV Antibiotics (joints, eyes, face)
Nursing Management for Bacterial Skin Infections (4)
1) Hand Washing
2) Clean clothing that directly touches affected area with hot water, and change daily
3) Discard Razors
3) Prevent child from touching affected area
Viral Skin Infections (2)
Warts
Herpes Simplex
Causes of warts (2)
What is a wart? and what does it look like?
HPV, verruca plantaris (plantar warts)
Papule, gray and brown, raised, circumscribed, firm, rough, lesions of < 1 cm diameter
Tx for Warts =
4
Destructive Therapy
1) Surgical Removal* (best)
2) Cryotherapy with liquid nitrogen
3) Laser Removal
4) Latinoic, Retinoic, Salicylic Acid Solutions
Herpes Simplex (2)
1) Type I = Oral Lesions (mouth sores, fever blisters)
2) Type II = Genital
Characteristics of Herpes
When do they heal?
Involves what parts of the body (4)
Clustered, grouped, burning, itching vesicles that dry and form a crust
Spontaneously in 8-10 days
Lips, Nose, Genitalia, Buttocks
Note: Culture first to rule out HSV 1 or 2, if they have genital, consider sexual abuse or that they have type 1 then touched genitals
Tx for Herpes Simplex (3)
1) Penciclovir (topical) - may shorten duration of cold sores
2) Acyclovir (oral antiviral)
3) Valacyclovir (Valtrex) - for recurrent genital herpes
Bacterial vs. Viral Infections
Why is viral harder to treat?
Bc viruses are intracellular -> harder to invade, and also may remain dormant for periods of time